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Green Composites Made of Bamboo Fabric and Poly (Lactic) Acid for Packaging Applications—A Review

M.R. Nurul Fazita
Krishnan Jayaraman
Debes Bhattacharyya
M.K. Mohamad Haafiz
Chaturbhuj K. Saurabh
M. Hazwan Hussin
4 and
Abdul Khalil H.P.S.
Centre for Advanced Composite Materials (CACM), Department of Mechanical Engineering, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand
School of Industrial Technology, Universiti Sains Malaysia, 11800 Gelugor, Penang, Malaysia
Cluster for Polymer Composites, Science and Engineering Research Center, University Sains Malaysia, 14300 Nibong Tebal, Penang, Malaysia
School of Chemical Sciences, Universiti Sains Malaysia, 11800 Gelugor, Penang, Malaysia
Author to whom correspondence should be addressed.
Materials 2016, 9(6), 435;
Submission received: 18 January 2016 / Revised: 28 April 2016 / Accepted: 29 April 2016 / Published: 1 June 2016
(This article belongs to the Section Advanced Composites)


Petroleum based thermoplastics are widely used in a range of applications, particularly in packaging. However, their usage has resulted in soaring pollutant emissions. Thus, researchers have been driven to seek environmentally friendly alternative packaging materials which are recyclable as well as biodegradable. Due to the excellent mechanical properties of natural fibres, they have been extensively used to reinforce biopolymers to produce biodegradable composites. A detailed understanding of the properties of such composite materials is vital for assessing their applicability to various products. The present review discusses several functional properties related to packaging applications in order to explore the potential of bamboo fibre fabric-poly (lactic) acid composites for packaging applications. Physical properties, heat deflection temperature, impact resistance, recyclability and biodegradability are important functional properties of packaging materials. In this review, we will also comprehensively discuss the chronological events and applications of natural fibre biopolymer composites.

1. Introduction

Petroleum based polymers have been utilized as one of the main materials in a vast range of applications, gradually displacing conventional materials. The growth of plastic is mainly owing to its excellent characteristics and processing possibilities. However, the packaging industry is facing major challenges such as diminishing availability of petrochemical resources, increases in their price and the persistence of these materials in the environment beyond their functional life. Thus, this motivates packaging manufacturers to find new solutions in producing renewable and environmentally friendly products such as fibre-reinforced recyclable and biodegradable packaging materials. Green composites, defined as biodegradable biopolymers reinforced by natural fibres, have very low impact on our environment and thus they are one of the potential alternatives to replace conventional petroleum based polymers and polymer composites [1,2,3].
Due to environmental concerns and the need for improvement in functional properties, replacement of petrochemical based thermoplastics by biopolymers has been widely investigated. Poly (lactic) acid (PLA), produced from renewable resources, has received much attention as a biodegradable polymer for packaging. Factors such as increased availability of PLA and increasing petroleum costs have led to the production of PLA-based biocomposites that can compete with the petroleum-based plastics that are available in the market [4]. PLA is a good candidate for packaging applications because of its excellent mechanical properties, transparency, and biodegradability, resistance to fats and oil and its renewable resources. It resembles polystyrene in some of its properties. However, it has some shortcomings such as low heat distortion temperature, which makes its application impractical for hot food packaging, brittleness and low impact strength, low viscosity, low thermal stability, high moisture sensitivity, medium gas barrier properties, high cost (compared with polyethylene (PE), polypropylene (PP), polystyrene (PS)) and low solvent resistance (e.g., water). The above mentioned disadvantages of the pure polymer can render it unsuitable for many applications [5].
Recently, PLA has been widely used as a matrix in biocomposites with natural fibres as reinforcement. However, the trend in most of these studies is the use of reinforcement in a form of short or unidirectional natural fibres. This trend has begun to change with the use of natural fabrics to reinforce PLA composites in order to explore more efficient composites in terms of stiffness and strength. The natural fibre fabric is introduced in order to improve certain limitations in the biopolymer, such as its impact strength, brittleness and heat deflection temperature.
This review article discusses the use of natural fibre based fabric-biopolymer composites, with the emphasis on PLA and bamboo fabric as material for packaging applications. The novelty of these materials is that, unlike other common natural short fibre based composites produced for commercial packaging, they are produced from bamboo in a fabric form. This article discusses several functional properties related to packaging applications in order to explore the potential of the bamboo fibre fabric-poly (lactic) acid composites in packaging applications. Physical properties, heat deflection temperature, impact resistance, recyclability and biodegradability are important functional properties for packaging. The recent applications of natural fibre-biopolymer composites are also presented in this article.

2. Natural Fibres

2.1. Advantages and Limitations of Natural Fibres

The growing interest in natural fibres is mainly due to their low density, which is typically 1.25–1.50 g/cm3 compared to glass fibres with a density of 2.6 g/cm3, allowing natural fibres to provide higher specific strength and stiffness in plastic materials [6]. The other key driver in substituting natural fibres for glass is the lower price of natural fibres (200–1000 US$/tonnes) compared to glass (1200–1800 US$/tonnes) [7]. Natural fibres also offer several advantages as they are recyclable, biodegradable, abundant, exhibit good mechanical properties, provide better working conditions and are less abrasive to equipment compared to common synthetic fibres, which can contribute to significant cost reductions [8]. All these characteristics make their use very attractive for the manufacture of polymer matrix composites.
However, researchers who have worked in the area of natural fibres and their composites agree that these renewable sources have some drawbacks, such as poor wettability, incompatibility with some polymeric matrices and high moisture absorption [8,9]. The key differences between natural fibres and glass fibres are shown in Table 1. The most common problem of natural fibre composites is fibre-matrix adhesion. The poor adhesion between hydrophobic polymers and hydrophilic fibres of the natural fibre reinforced polymer composites can lead to lower mechanical properties. Therefore, a good bond between the matrix and fibres is essential. In a fibre reinforced composite, the matrix plays an important role in transferring the applied load to the stiff fibres through shear stresses at the interface. The full capabilities of the fibres in the composite cannot be exploited if the adhesion is poor at the interface, as well as leaving the composite susceptible to environmental attacks that may weaken it, thus reducing its life span. These properties may be improved by physical and chemical treatments [10,11].
Cellulosic fibres are hydrophilic and susceptible to moisture which can affect the mechanical and physical properties as well as lead to dimensional variations of the composites. Their moisture content can vary between 5% and 10%. The other disadvantages of natural fibres are moisture sensitivity, heterogeneous quality, and low thermal stability. The thermal degradation of natural fibres is a three-stage process. The first stage, occurring from 250 to 300 °C, is attributed to the low molecular weight components such as hemicellulose. The second decomposition process is seen in the temperature range 300–400 °C and third one is observed around 450 °C. The second degradation process is associated with degradation of cellulose whereas the degradation occurring in the last stage is due to lignin breakdown [13,14]. The degradation of natural fibres is a crucial aspect in the development of natural fibre polymer composites and can limit the use of some thermoplastics. Thermal degradation of the fibres also results in production of volatiles at processing temperatures above 200 °C. This can lead to porous polymer products with lower densities and inferior mechanical properties [15,16]. The key advantages and disadvantages of natural fibres are shown in Table 2. A wide variety of different fibres can be applied as reinforcements or fillers. Natural fibres have three main categories depending on their origin, as shown in Figure 1.

2.2. Why Bamboo?

Bamboo is one of the most under-utilised natural resources and it is available abundantly in Southeast Asian countries [19,20]. The percentage of bamboo produced by continent is shown in Figure 2, while Figure 3 indicates the countries with the largest bamboo resources. Malaysia contributes to about 1.9% of the world’s bamboo resources [21]. In particular, the bamboo stock in Malaysia is approximately 7 million tons with only 6000 tons of commonly used species [22]. Han et al. [19] reported that the total bamboo forest area in the world reached 22 million hectares in 2008 and worldwide availability of bamboo fibre is over 30 million tons per year.
Bamboo has attracted worldwide attention as a potential reinforcement for polymer composites because it is one of the fastest growing renewable plants, with a maturity cycle of 3–4 years. Its fibres possess excellent mechanical properties such as high tensile modulus and low elongation at break; their specific stiffness and specific strength are comparable to those of glass fibres [23]. The potential of this material for traditional composite panel manufacture has been explored. However, much of the current research focuses on composites reinforced with short bamboo fibres [13,23,24,25,26,27], and little work on bamboo fabric composites have been published [28,29].

2.2.1. Chemical Composition of Bamboo Fibres

Cellulose, hemicellulose and lignin are the major compositions of bamboo which contributes more than 95% of the bamboo total mass. The other minor components of bamboo are resins, tannins, waxes and inorganic salts. Its chemical composition is similar to that of wood; however, bamboo has a higher content of minor components compared with wood [31]. The chemical composition of the bamboo fibre is shown in Figure 4.
Abdul Khalil et al. [30] reported that cellulose content decreases continually as bamboo ages, affecting the chemical composition of the fibres. Figure 5 illustrates the interesting microstructure and macrostructure of the bamboo which contribute to its structural reliability. Elementary fibres in the fibre bundle comprise of thick and thin layers with different fibrillar orientation. The alternate thin and thick layers have different arrangements of cellulose microfibrils. Thin layers show mainly a more transverse orientation, whereas thick layers show low microfibril angle to the fibre (Figure 5f). Lignin is present in different concentrations in different layers of the cell wall. Lignin and cellulose together provide a structural function in plants. In addition, hemicellulose and phenolic acids are responsible for covalent bonding in the cell wall structure [30,33].
The chemical compositions of bamboo, such as carbohydrate and starch content play an important role in the service life as well as the durability of bamboo against mould, fungal and borer attack. The species and climatic condition are the other factors that affect the durability of bamboo. Certain extractive could be an advantage for decay resistance in some species, while higher silica and ash content in bamboo can have an undesirable effect on the processing machinery [31].

2.2.2. Mechanical and Physical Properties of Bamboo

By nature, bamboo itself is a unidirectional fibre reinforced composite comprising of long and parallel cellulose fibres (vascular bundles) surrounded by a ligneous matrix. Compared to its transverse direction, the longitudinal direction is more than ten times stronger because of its significant anisotropy in strength [33]. The fibres have a density of 1.16 g/cm3, while the ground tissues have a much lower density of 0.67 g/cm3. In bamboo, the density distribution in radial position in the cross-section area and along the length of the plant varies. The fibre density of the inner part is much lower than the outer part and the mean fibre density in the section greatly affects compressive strength of bamboo. Bamboo can be processed into various forms, such as whole bamboo, sections of bamboo, bamboo strips and bamboo fibres [34]. When compared with the other natural fibres, bamboo has high specific stiffness and strength due to its low density and high mechanical strength (Table 3) [33]. Table 3 compares a number of physical and mechanical properties of different natural fibres to those of common synthetic fibres.

3. Fabrics

3.1. Hierarchy of Textile Materials

Initially the term “textile” referred to woven fabrics; however, the term now applicable to fibres, filaments and yarns, natural or synthetic, and most products derived from them. This definition introduces three essential concepts which are fibre, yarn and fabric: (1) fibres at the microscopic scale; (2) yarns, repeating unit cells and plies at the mesoscopic scale; and (3) fabrics at the macroscopic scale. Each level is defined by a characteristic length, dimensionality and structural organisation. Fibres and yarns are mostly one-dimensional, while fabrics are two or three dimensional [37].
A fibre is defined as a raw material of textile, normally characterised by flexibility, fineness and ratio of length to thickness. The diameter of fibres used in textile reinforcements for composites (glass, carbon, aramid, polypropylene, flax, etc.) varies from 5 to 50 µm. Fibres of finite length are called short, discontinuous, staple or chopped with lengths from a few millimetres to a few centimetres while continuous fibres are called filaments, which are effectively infinite in length [37,38]. Yarn is a linear assemblage of fibres and fibre plies; which is then used to produce textile. A textile fabric is defined as a manufactured assembly of fibres and/or yarns. The properties of a fabric are the properties of fibres transformed by the textile structure.

3.2. Textiles Terminology

A yarn can be made of fibres and/or filaments, with or without twist. It has substantial length with relatively small cross-section. The simplest form of yarn is monofilament which consists of a single fibre. Untwisted, thick yarns called as tows are made by including an adhesive. This adhesive or sizing holds the fibres together to facilitate tows manufacturing. This adhesive can also be used as the matrix material in composites. Flat tows are called rovings. Spinning is a process to produce twisted yarn from staple fibres, whereas twisting is a process to produce twisted yarn from continuous filament yarn. In the spinning process, twist is the primary binding mechanism that gives the yarn a twisted structure. Twist will help to bind the fibres by generating inter-fibre friction and thus imparts processability to the yarn. Blends are produced from fibres of different types which are easily mixed when yarn is spun. Finally, a ply yarn can be produced by twisting several filament yarns together [37].

3.3. Fabric Structures

There are three main categories of fabric structure; woven, knitted and braided fabric, however, only woven fabric will be discussed here. Woven fabric has a structure in which the warp yarns and the weft yarns are interlaced. The warp direction is parallel to the length of the roll, while the fill or weft direction is perpendicular to the length of the roll [39]. The tensile strength of a woven fabric is equivalent to the sum of the strengths of the yarns oriented along the tensile direction. However, several issues related to woven fabric have been identified and studied by researchers worldwide [40]:
  • The presence of twist in the yarns will disturb the stress transfer between fibres within the yarn; subsequently this will affect the fracture mechanism and strength of the yarn.
  • The ‘crimp’ normally occurs from the utilization of twisted yarns to produce woven textile reinforcements. This phenomenon will result in misalignments and stress concentrations that will lead to an unfavourable effect on composite properties.
  • The yarn permeability and impregnation are reduced because the twist tightens the yarn structure.
Woven fabric is identified by the linear densities of warp and weft yarns, the weave pattern, the number of warp yarns per unit width (warp count), a number of weft yarns per unit length (weft count), warp and weft yarn crimp, and surface density. The simplest woven fabric structure is the plain weave where the warp and weft yarns are interlaced in a regular sequence of one under and one over. Plain weaves have more interlaces per unit area than any other type of weave, and therefore the tightest basic fabric design, and are the most resistant to in-plane shear movement [41]. The difference between each types of woven fabric can be seen in Figure 6.
Twill weave is defined as a fundamental weave with yarns are interlaced to produce a pattern of diagonal lines on the surface. Satin weave is a fundamental weave characterised by sparse positioning of interlaced yarns, which are arranged with a view to producing a smooth fabric surface devoid of twill lines (diagonal configurations of crossovers).

3.4. Bamboo Fibre Fabrics

There are two key advantages that can be obtained by manufacturing textile from bamboo. First, the benefits resulting from the utilization of the bamboo plant itself: its abundance and low cost as a natural resource, its renewability, its efficient space consumption, its high takes up of greenhouse gases and oxygen release, the fact that it does not need replanting and requires no pesticides or fertilisers, its low water use, and its organic status. Bamboo also yields 50 times as much fibre per acre as cotton. Second, benefits resulting from fabric properties given from the plant such as its natural antibacterial and biodegradable properties, as well as UV protective characteristics [32,42]. Bamboo fibres also possess many excellent properties when used as textile materials, such as high tenacity, high strength and stiffness due to continuous fibres oriented on at least two axes [43]. Moreover, the yarn is only need to withstand the stresses experienced during the manufacturing of the fibre reinforced composites. This is because the interfacial bonding between the fibres and matrix will replace the fibre-to-fibre friction created by the twist [44].
However, the essential factors in the textile industry such as the energy, water, and chemical requirements that can be involved in its manufacture are the main restrictions of bamboo textiles [45]. Table 4 reveals the chemical components of flax, jute and bamboo fibres after degumming through a chemical treatment process. The cellulose content in the bamboo fibre reaches more than 70%, which meets the preliminary requirement for textile applications [32].

Fabric Processing Method

The cellulosic fibre extraction of bamboo by degumming process is challenging due to the main components in bamboo invades each other and forms an interpenetrating network structure. Therefore, a more intensive degumming effect for fibre extraction is required because of the extremely tight structure of bamboo culm. Ramie has a long fibre (length varying from 60–250 mm), which is suitable for downstream steps in textile processing. Meanwhile, bamboo (monofilament) has shorter fibres, which is between 1.5 and 4.5 mm in length. Thus, different degumming methods should be used to process bamboo fibres for textile utilization. Similar technique is also required for other plant like hemp, kenaf and flax to obtain processable fibre bundles for textile application [47].
Several different manufacturing processes can be used to convert bamboo from the plant to the woven fabric, with different effects on the environment. Currently, there are two main manufacturing methods for bamboo textiles: Mechanical processing (stripping, boiling, and enzyme use) is similar to flax processing and produces linen-like fabrics; Chemical processing (multi-phase bleaching) is quite similar to that of viscose rayon fibre and produces fabrics similar to rayon from bamboo.
Mechanical processing
Mechanical methods of producing bamboo fibre fabric are less harmful but more expensive. In this process, the bamboo is crushed, followed by the utilization of natural enzymes to breakdown the bamboo walls into a soft form. In the soft form, these fibres can be mechanically combed out and spun into yarn. Since this process is more labour intensive and costly, it is hardly used for manufacturing clothing with bamboo fibre. This process will produce a relatively stiff and rough bamboo fabric like flax (linen) or hemp [30].
Chemical processing
Most bamboo fabric in the market has a smooth-textured that feels similar to rayon; in fact, it is a form of rayon. Through chemical process, the bamboo can be converted into a regenerated cellulose fibre known as rayon, which falls into a category between natural and synthetic. The viscous process is an established and widely used process for bamboo. In the chemical process, a strong solvent is used to dissolve the cellulose material into a thick solution. Then, this solution is forced through a spinneret into a quenching solution in order to solidify the strands into fibre. This process is also known as hydrolysis alkalization or solution spinning. The solvent used for this process is carbon disulfide, which is harmful for human reproductive and pollutes the environment through air emissions and wastewater [30]. The recovery of this solvent is normally around 50%; the other half goes into the environment. Sodium hydroxide and sulfuric acid are the other hazardous chemicals used in the viscose process [48]. There is an environmentally friendly chemical process also known as closed loop system called lyocell. The only weakness for this method is the high cost in setting up the factories [49].
Biological degumming
Recently, the utilization of biotechnology in textile industry is becoming more important especially in bamboo textile manufacturing. Single biological treatment, either microbial or enzymatic treatment has been established as an effective treatment to remove specific substances from lignocellulose materials. For bamboo degumming, in order to achieve efficient degradation or removal of unwanted component, a combination of a pre- and post-treatment is essential. This is because bamboo consists of high lignin content which hinders the attack of microbes or enzymes. However, the biological treatments are very limited when applied directly on raw materials due to an extremely tight structure of bamboo itself. Therefore, biological methods are normally combined with mechanical or chemical treatments for bamboo fibre extraction. There are two biological degumming methods identified; microbial and enzymatic degumming. The combination of microbial and enzymatic degumming has also been investigated by many researchers [47].

Microbial Degumming

For microbial degumming, it comprises of a microbial consortium or mixed microbial cultures which are directly inoculated in the plant material. The gummy substances will be utilized by the microbes as a source of nutrition and further grow on a large scale in the plant resources. Then, the enzymes can be accumulated from the microbes during growth and activate the degradation of the gummy materials into small water soluble molecules [47].

Enzymatic Degumming

In the case of enzymatic degumming, purified and concentrated enzymes or commercial enzymes from microbial fermentation are applied directly to the plant material in an appropriate buffer. The fibres are separated when the enzymes initiate the degradation of the colloid complexes. Thus, selection of the right enzymes to achieve the highest degumming yield is vital for an effective bio-degumming [47].

4. Biopolymers

Biopolymers are polymers that are generated from renewable natural sources, are often biodegradable and nontoxic. Biodegradable materials are defined as those materials which can be degraded by the enzymatic action of living organisms that produce CO2, H2O, and biomass under aerobic conditions or hydrocarbons, methane and biomass under anaerobic conditions [50,51]. They can be manufactured from biological systems such as microorganisms, plants, and animals, or chemically synthesized from biological materials such as starch, natural fats, sugars or oils. Two approaches are used in converting these raw materials into biopolymers: (1) extraction of the native polymer from plant or animal tissue; and (2) chemical or biotechnological monomer polymerization [52]. Figure 7 schematically illustrates the variety of biodegradable plastics.

Why Poly (Lactic) Acid (PLA)?

Poly (lactic) acid (PLA) which is produced from renewable resources, has received much attention in the research of biodegradable polymers. The feedstock from crops such as corn and sugarcane is fermented to obtain lactide and lactic acid monomers. Two-step ring-opening polymerization of lactide is the most common method to acquire the high molecular weight of PLA (greater than 100,000 Da). In 2002, Cargill Dow used about 300 million USD to begin mass-producing its new PLA based plastic under the trade name NatureWorks™ [52]. Figure 8 presents the synthesis process of PLA.
There are several advantages to PLA, such as it is obtained from a renewable agricultural source (corn), its production utilizes carbon dioxide and offers significant energy savings, it is recyclable and compostable (under the right conditions), as well as its physical and mechanical properties can be manipulated through the polymer architecture [55].
However, a drawback of processing PLA in the molten state is its tendency to undergo thermal degradation, which influences its process temperature and the residence time in the extruder and hot runner. This affects the recyclability of PLA [56]. Several reports have shown that PLA is thermally unstable above its melting temperature. The presence of moisture has a particularly significant effect at higher temperatures as it induces hydrolysis. Thus, care has to be taken to ensure that PLA does not undergo degradation during processing. Drying samples before use or processing under nitrogen atmosphere is recommended [57].
Currently, research related to PLA as a matrix in natural fibre biocomposites is relatively limited because only recently PLA has been available in bulk quantities. The cost of PLA is comparable with polyethylene terephthalate (PET) but quite expensive when compared with other commodity thermoplastics such as polyethylene and polypropylene. Due to its high cost, the primary attention of PLA as a packaging material has been in high value films, rigid thermoforms, food and beverage containers and coated papers. However, as evolving production technologies may lower the PLA production costs, PLA could be used in broader range of packaging products.
“Green composites” that are produced from PLA reinforced natural fibre composites can provide promising mechanical properties in comparison to non-renewable petroleum-based products [54]. Furthermore, fibre addition can also enhance properties of PLA such as heat deflection temperature, impact strength and barrier properties.

5. Natural Fibre Fabric Composites

The packaging industry is looking for materials which have specific properties, but can also be easily thrown out after usage [58]. Each component in “green composites” originates from renewable resources that conserve energy and it is compostable [54,59] which makes it a potential eco-friendly material for packaging applications. Research related to natural fibre fabric-biopolymer composites have been carried out by several researchers. Table 5 summarises the mechanical properties of natural fibre fabric-PLA composites research papers available to date.

6. Packaging

Packaging can be defined as the process of preparing items for preservation, storage, transportation and display. Packaging also must meet requirements such as [9]:
  • the ability to keep the item safe from physical and chemical damage
  • the ability to provide ease during handling and transportation
  • the ability to encourage consumers to purchase the product
There are three categories of packaging: primary, secondary and tertiary packaging. Primary packaging can be defined as material that come into direct contact with but can be separated from the product. Secondary packaging is used for physical protection of the product, while tertiary packaging fulfils storage and handling requirements of the product as well as to protect the product from damage and weather conditions during transportation [9].
Current development necessity for environmentally friendly packaging designs and materials is being driven by an increasing number of global packaging standards and regulations. Based on the Sustainable Packaging Coalition, packaging should be “sourced responsibly, designed to be effective and safe throughout its life cycle, made entirely using renewable energy and once used, is recycled efficiently to provide a valuable resource for subsequent generations of packaging” [66]. Plastic packaging is commonly used once and then thrown away, generating a continuous waste stream. Formerly, the use of natural fibres as fillers in non-biodegradable polymers or the use of biodegradable polymers as packaging materials have been the main approaches to reduce this waste [9].
The life cycle of the packaging starts with the selection of the raw materials, depending on the types of packaging product, followed by a suitable production process. Then, the packaging products will be used by the consumers, who decide whether to reuse or recycle them. For biopolymer packaging materials, the consumers will have another option; to collect the materials to be degraded via a biodegradation process under controlled conditions. The complete life cycle of the packaging is shown in Figure 9.

6.1. Properties Related to Packaging Applications

Several properties related to packaging application have been identified. These properties are important to provide an understanding of the materials in conversion into packaging products. The properties can be divided into three categories; mechanical, thermal and functional properties.

6.1.1. Mechanical Properties

Mechanical properties are important in order to predict how the materials behave under loads when they are subjected to various manufacturing operations. These properties also demonstrate how finished products will perform during their entire service life. Several mechanical properties of natural fibre fabric reinforced PLA composites are shown in Table 5.

6.1.2. Thermal Properties

An understanding of the thermal properties of these composites is necessary in determining appropriate packaging applications. Composite thermal properties, such as glass transition temperature and melting temperature, affect the mechanical behaviour of composites and therefore, are influential in determining suitability of composites for certain packaging applications. Glass transition temperature is very critical when the packed material is to be stored in a frozen environment. The manufacturer must ensure that the glass transition temperature of packaging material is lower than the freezer temperature. Otherwise, the packaging material will become brittle, and may crack [68]. Nurul Fazita et al. [69] reported the thermal properties, such as melting temperature, glass transition temperature and heat deflection temperature of bamboo fabric-PLA composites as the important properties for packaging applications.

6.1.3. Functional Properties

Functional property evaluation of the bamboo fabric-PLA composites can be achieved by determining whether the manufactured composites show any improvement in their properties when compared with the unreinforced polymers. Physical properties, heat deflection temperature, impact resistance, recyclability and degradability are the functional properties that are relatively important for packaging products.

Physical Properties

Appropriate selection of materials and the specific manufacturing processes are crucial for the proper design and manufacturing of a product. These factors will further affect the service life of the finished products. Thus, physical properties such as density, moisture content, thickness and water absorption are essential for packaging materials.
Thickness uniformity is an important criterion in packaging product manufacturing. On the other hand, knowledge of the moisture properties of packaging materials is essential for providing an understanding into the mechanics of failure and the roles of materials in the failures. This is important for material selection, failure analysis, as well as material development. One of the most important issues for natural fibre thermoplastic packaging is the poor resistance of the fibres to water absorption. This can have undesirable effects on the mechanical properties and dimensional stability of the composites. The water absorption test is essential to determine the quantity of water absorbed by a material as well as the effects that the water absorbed may have on the appearance of the composites. Nonhomogeneous materials such as laminated form may exhibit widely different rate of water absorption through edges and surfaces.

Impact Resistance

Many research works have reported the impact strength of natural fibre-PLA composites using Charpy and Izod impact testing [5,70,71,72,73]. These traditional impact test methods give inadequate information to understand the impact fracture behaviour of materials because they only provide the total energy consumed during the entire impact fracture process. Impact damage of polymeric composite materials is a complex process [74].
The instrumented impact test is a sophisticated method for measuring impact properties. It provides more information about relationships relevant to toughness such as impact force-time, velocity-time, energy-time and force-displacement. The drop weight impact test is now widely used to study the impact behaviour of composite materials. In this test, a sample is positioned on rigid supports and then the sample is impacted with a rod of certain weight from a desired height. The drop weight impact test is conducted to study the susceptibility of the composites to damage from concentrated out-of-plane impact forces [75]. Drop weight impact has some important advantages over other methods such as its applicability to moulded samples. Failure can be defined by deformation, crack initiation and propagation, or complete fracture, depending on the requirements; samples do not have to break to be considered as failures. These factors make drop weight testing a reliable simulation of functional impact exposures, and therefore closer to real-life conditions.
Understanding the behaviour of woven fabric-reinforced composites in an impact event by studying the formation of damage and analysing the absorbing effects under low-velocity impact will lead to improvement in their damage-resistance characteristics and enhance their use in packaging. A few studies have been conducted using drop weight impact tests on natural fibres-PP composites [76,77,78] and limited work has been done with the natural fibre-PLA composites [69]. Several researchers have considered drop weight impact test for PLA related to their use in biomedical, structural and packaging applications [79,80,81].

Heat Deflection Temperature (HDT)

The deflection temperature can be defined as a measure of a polymer's ability to stand a given load at elevated temperatures and is a useful measure of relative service temperature for a polymer. HDT is considered as one of the important properties for packaging applications. It is closely related to the concern over transportation, particularly during summer months and in warmer climates where the temperature is relatively high in unconditioned environments. Low HDT is one of the drawbacks of PLA that limits its application [5,82]. The other problem associated with HDT is the resistance of the PLA packaging or containers to be “hot-filled” [83,84]. A few researchers have found that by adding fibres, the HDT of the PLA composites can be improved [82,85]; however, limited work has been done to investigate the HDT of natural fibre fabric composites [69].


The life cycle stages of thermoplastic composite materials are shown in Figure 10. Reuse by virtue of a recycling step is feasible for thermoplastic composites within certain restrictions. Generally, this recycling involves crushing the parts before a mixing phase to blend the recycled materials with virgin material. This mixture is then processed under high pressure and temperature by means of conventional injection or extrusion technologies [86].
Recycling of composites can minimise raw material consumption leading to a reduction in the the global impact on the environment. Mechanical and thermal degradation of both the matrix and the reinforcement will occur during the recycling. Pillin et al. [87] studied the thermo-mechanical effects of recycling on the mechanical properties of the PLA, noting constant Young’s modulus but with a decrease in stress and strain at break.
Degradation of PLLA can be initiated through temperature changes in the presence of air and random chain scissions will occur [59]. The structure of semi-crystalline polymers such as PLLA will also change during multiple injections. Crystallisation occurs during cooling and may be enhanced if a reduction in molecular weight results in greater mobility of molecular chains. In comparison, the crystallinity of polypropylene in hemp/PP and sisal/PP composites does not change significantly when these materials are subjected to several injections [88]. The mechanical properties of sisal/PP and hemp/PP have also been investigated as a function of recycling cycles. Natural fibres have limited thermal stability. Gassan et al. [89] demonstrated that the onset of thermal degradation of flax and jute fibres occurs at around 170 °C. The recyclability of bamboo fabric-PLA composites has been done by Nurul Fazita et al. [90]. They found that mechanical (tensile and flexural) strength and thermal stability of recycled bamboo fabric-PLA composite were higher than those of virgin PLA.


In general, polymer degradation takes place through the scission of the main or side chains of polymers. Different degradation mechanisms, whether chemical or biological, can be involved in the degradation of biodegradable polyesters. A combination of these mechanisms can happen at some stage of degradation. There are several important factors that affect the biodegradability of polymers. These are: (1) factors associated with the first-order structure (chemical structure, molecular weight and molecular weight distribution); (2) factors associated with the higher order structure (glass transition temperature (Tg), melting temperature (Tm), crystallinity, crystal structure and modulus of elasticity); and (3) factors related to surface conditions (surface area, hydrophilic, or hydrophobic properties) [91].
Previous research has shown that the crystalline part of the PLA is more resistant to degradation than the amorphous part, and that the rate of degradation decreases with an increase in crystallinity. The degradation behaviour of polymers also depends on their molecular weight. High molecular weight PLA are degraded at a slower rate than those with low molecular weights. The melting temperature (Tm) of PLA has a great effect on enzymatic degradability. In general, the higher the melting point the lower the degradability tends to be [91].
Ochi [92] used enzymatic composting material for the investigation of PLA/kenaf composite, and found the weight of composite had decreased 38% after 4 weeks of composting. Mathew et al. [93] achieved a higher degradation rate without enzymatic material by using the higher temperature of 58 °C. Yussuf et al. [94] obtained a lower rate of degradation for PLA/kenaf composite, attaining weight loss of only 1.2%, very slow compared to the enzymatic techniques. The very low average temperature of 30 °C used was likely the reason for the slow rate of degradation observed in this research. Rudeekit et al. [95] investigated the biodegradability of PLA under different environments, e.g., landfill, waste water treatment, composting plant and controlled composting conditions. PLA was degraded rapidly under composting plant conditions. This may be due to the high temperature and humidity (50–60 °C and 60%).
The degradation process of PLA under aerobic conditions in compost is started by a sequential mechanism beginning with a simple chemical hydrolysis to decrease the molecular weight of the PLA. And then, assimilation will occur when the microorganisms utilise the lactic acid oligomers as an energy source. Finally, the end product of the process is compost and release of CO2 back into the atmosphere. Aerobic degradation is highly dependent on temperature. At the temperature of 55–60 °C with little or no degradation at mesophilic temperatures, complete biodegradation will occur within 3–4 months. On the other hand, Kolstad et al. [96] reported that soil burial for a year (0–22 °C) have no effect at all on physical properties of PLA test bars. Kolstad et al. [96] also discussed some of the many factors which are involved, such as water content, temperature, crystallinity, pH, and other factors.
Shi and Palfery [97] reported that an anaerobic biodegradation is accelerated when the degrading temperature is greater than the PLA glass transition temperature (Tg). This may be due to the fact that above Tg, the amorphous part of the PLA becomes more susceptible to microorganisms. However, the anaerobic biodegradation is apparently slowed when the degrading temperature is below PLA Tg. The biodegradability of bamboo fabric-PLA composites has been done by Nurul Fazita et al. [90]. They revealed that in controlled composting conditions, the biodegradation half-life of bamboo fabric-PLA composites (46 days) was longer than that of the virgin PLA (25 days). This shows that the reinforcement of bamboo fabric in PLA matrix minimize the rapid microbial decay of bamboo fabric-PLA composite. They also reported that the biodegradability of PLA matrix potentially depended on the presence of bamboo fabric and composting conditions.

Energy Absorption Capability of Textile Composites

Recently, the energy-absorbing capacity of textile composites attracted the attention of researchers. The assemblies of fibres with certain orientations and low packing density of textile structures are similar to cellular materials which possess excellent energy absorption capacity. The structural parameters of fibre assemblies, such as energy absorption can be designed for particular composite applications. This kind of materials can be used in various areas where the specific energy-absorbing capacity is the main technical concern, such as in protective packaging and crushing elements in cars and bicycle helmets [98,99].
Safety, quality and material costs require an effective testing of packaging materials to the point of collapse or deformation. Thus, the drop weight test is the most suitable test in studying the formation of damage and analysing the absorbing effects under low-velocity impact. The purpose of this test is to simulate these real-life conditions in order to prevent the product from breaking, or to make its failure predictable. This information can help to improve their damage-resistance characteristics and enhance their use in packaging. Impact testing, conducted on materials in both raw and finished states, allows the manufacturer to determine the best combination of material components. During impact tests, the materials and products are pushed to absorb loads quickly by exposing them to the dynamic events. Valuable information as to how that material will perform in real-life situations will be provided by this type of testing.
Many studies on the energy-absorbing capacity have been performed using quasi-static and impact tests. In investigating the quasi-static behaviour of the dome materials, researchers have concentrated on how the domes are deformed and distorted after the load is applied at various orientations. Meanwhile, the studies of dynamic behaviour have revealed that dynamic deformation mechanisms and energy-absorbing capacity are significantly different due to strain rate and non-local effects. The findings of the extensive research work which has been carried out in quasi-static and impact testing has demonstrated that there are multiple variables which control the energy absorption capability of the composites materials, such as fibre and matrix properties, fibre architecture (stacking sequences), and the testing speed [100,101,102].

7. Chronological Event of Natural Fibre Fabric-Biopolymer Composites Study and Applications

Recent advances in the field of green composites, natural fibre fabric and biocomposites indicate the importance and potential of biocomposites for numerous applications. Regardless of its noteworthy properties, the use of petroleum based composites has become unattractive due to a few reasons, including disposal and recycling problems, as well as environmental and societal concerns. Therefore, natural fibre fabric-biopolymer composites have been extensively studied recently as they provide a positive environmental impact and remarkable characteristics. The chronological order of events that took place in the exploration of natural fibre fabric-biopolymer composites study and its related applications in various fields are shown in Table 6.

8. Current Packaging Applications of Natural Fibre Reinforced Composites

A few companies have already started to use natural fibre composites instead of typical plastic packaging materials. This points out the fact that natural fibre fabric-biopolymer composites particularly bamboo fibre fabric-PLA composites which are entirely based on renewable resources, could find interesting packaging applications at the industrial level as environmentally friendly materials that can substitute some commodity plastics. Since natural fibre fabric-biopolymer composites have better impact properties as compared to short fibres-biopolymer composites [23], they can be used in rigid packaging or in protective packaging. These products will have satisfied performance during service and will return back to the nature after use under certain composting conditions.

8.1. Cosmetics Packaging

FS Korea is one of the companies that utilised wood plastic composites for packaging applications. They have used this alternative material in its packaging solutions in order to minimise the consumption of petroleum based polymers. The products are shown in Figure 11. Interestingly, the environmental value of their products can be improved by creating packaging using sustainable plastics [112].
Figure 12 shows an example of containers for a perfume moulded using curauá fibre/wood flour based composites. The Brazilian branch of Rexam Beauty Packaging, one of the well-known plastic cosmetic packaging products, introduced this product. This new specialty compound meets the customer’s goals of integrating natural components into the packaging as a complement to the all-natural ingredients in its products [113].

8.2. Laptop Casing

Presently, laptop casing is made using synthetic polymers such as ABS or polycarbonate. The environmental effect can be reduced by substituting these plastics with natural fibre composites. A hemp fibre plastic composite is one of the potential materials to substitute the synthetic polymers. ABS uses about 100 MJ to make 1 kg of the material, while hemp fibre plastic only uses around 60 MJ of energy to make the same amount of material. This shows that the utilization of energy can be reduced by using natural fibres. The laptop casing made from hemp/PLA based composites (Figure 13) would be fully biodegradable and recyclable [114].

8.3. Injection-Blow Molded Bottles

National Nutraceutical Center at Clemson University has worked with Plastic Technologies, Inc. (Holland, OH, USA) to produce preforms of PLA and cotton fibres for injection-blow moulded bottles (Figure 14). They are working under a grant for Gaia Herbs, Brevard, to produce an “all-natural” bottle as an alternative to glass bottles. PLA and cotton fibres were compounded using a two-roll mill machine. They included a small amount of herbs such as turmeric in the formulation and found that the bottles have low moisture and oxygen transmission as well as improved UV resistance, 45% higher than that of PET [115].

8.4. Biodegradable Food Packaging

The biodegradable plastic food packaging made of 75% PLA and up to 25% wood fibres has been produced by the EU-funded Bio-Based Composite Development project (Figure 15). In the project known as FORBIOPLAST, they are trying to utilize by-products from the forestry and paper-industry to develop biodegradable food packaging. The researchers believe that these products can replace the traditional food tray; however, extensive studies in food packaging are needed. As examples, tests to assess the migration qualities and safety of the material for use with food are essential [116].

8.5. Biodegradable Cassava-Based Packaging (UBPack)

UBPack (Figure 16) is a biodegradable starch-based material, an environmentally friendly product and does not cause destruction to the environment. These products are produced from natural materials, e.g., cassava starch and plant celluloses. UBPack has several advantages such as insulation properties, hot and cold resistance, and being hydrophilic (very good for cosmetics) due to its starch polymer cellular structure [117].

8.6. Laptop Packaging Made from Blend of Sustainable Plant Fibres

Be Green (Figure 17) is a material that produced from plant fibre blend and offers a number of benefits over traditional packaging such as paperboard and plastic. The fibres used are rapidly renewable, abundant and grow like weeds in many parts of the world. Moreover, no petroleum based materials are used in the manufacturing of Be Green’s plant fibre blend [118]. Thus, this material is biodegradable and eco-friendly products.

8.7. Mobile Box Made of Natural Fibres

This mobile box (Figure 18) is made of natural resources and is shaped fit to a mobile. It is produced from white natural bagasse which enhances the eco-friendly and natural feeling of the product. Sustainable packaging creates an eco-friendly image for the mobile industry. The lid and base structures are strong enough to protect the mobile. Thus, the mobile box can function as a protective packaging for a mobile [119].

8.8. Custom Made Eco-Friendly Electronic Packaging Boxes for Thomson Lamp Bulb

The protective packaging for a lamp bulb is made of recycle paper pulp which is from natural resources and is totally biodegradable as well as compostable (Figure 19). It can protect the lamp bulb from damage during transportation and handling [120].

9. Conclusions

The use of natural fibre fabric-biopolymer composites in industrial application provides challenges for researchers around the world to access the performance and quality of natural fibre fabric-biopolymer composites for use as materials in many applications, especially in packaging applications. Natural fibre fabric-biopolymer composites are biodegradable, renewable, and recyclable; they may replace or reduce the use of man-made fibres in various applications. Thus, it is crucial to recognize the functional properties required for natural fibre fabric-biopolymer composites to be used as material for packaging.
Therefore, this review article has focused on the functional properties related to packaging applications of the bamboo fibre fabric-PLA composites. The properties discussed here are required in order to evaluate the feasibility of bamboo fabric-PLA composites in packaging applications. These properties were adapted as per requirement needed by the plastic packaging. Currently, there is no specific standard for the use of natural fibre fabric composites as packaging material. Thus, this review article will help manufacturers and researchers who are interested in studying the essential properties of natural fibre fabric composites for packaging applications. This manuscript will also open new windows and will provide novel insights on the important properties of natural fibre fabric-biopolymer composites, particularly bamboo fabric-PLA composites, for various application-based research.


This work is supported by scholarships to the first author from Universiti Sains Malaysia (USM), Malaysia and the Ministry of Higher Education (MOHE), Malaysia. Thanks also go to the staff at the Centre for Advanced Composite Materials (CACM), The University of Auckland, New Zealand. The authors are gratefully acknowledged Ministry of Education for the Fundamental Research Grant Scheme (FRGS-203/PTEKIND/6711497).

Author Contributions

M.R. Nurul fazita, Krishnan Jayaraman and Debes Bhattacharyya wrote the first draft of the manuscript. M.K. Mohamad Haafiz, Chaturbhuj K. Saurabh and M. Hazwan Hussin proofread and critically reviewed the manuscript with the assist of Abdul Khalil HPS. All authors read and approved the final draft of this manuscript.

Conflicts of Interest

The authors declare no conflict of interest.


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Figure 1. Categories of natural fibres [7,9,18].
Figure 1. Categories of natural fibres [7,9,18].
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Figure 2. Percentage of bamboo produced by continent [21,30].
Figure 2. Percentage of bamboo produced by continent [21,30].
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Figure 3. Countries with the largest bamboo resources [21].
Figure 3. Countries with the largest bamboo resources [21].
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Figure 4. Chemical composition of bamboo fibre [30,32].
Figure 4. Chemical composition of bamboo fibre [30,32].
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Figure 5. Bamboo microstructure [33].
Figure 5. Bamboo microstructure [33].
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Figure 6. Woven fabric terminology.
Figure 6. Woven fabric terminology.
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Figure 7. Schematic representation of the diversity of degradable materials [53].
Figure 7. Schematic representation of the diversity of degradable materials [53].
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Figure 8. Synthesis of poly (lactic) acid (PLA) [54].
Figure 8. Synthesis of poly (lactic) acid (PLA) [54].
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Figure 9. Life cycle of the packaging [67].
Figure 9. Life cycle of the packaging [67].
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Figure 10. Life cycle stages.
Figure 10. Life cycle stages.
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Figure 11. Cosmetic packaging products made from wood plastic composites [112].
Figure 11. Cosmetic packaging products made from wood plastic composites [112].
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Figure 12. Containers for a perfume moulded using curauá fibre/wood flour based composites [113].
Figure 12. Containers for a perfume moulded using curauá fibre/wood flour based composites [113].
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Figure 13. Laptop casing made from hemp/PLA based composites [114].
Figure 13. Laptop casing made from hemp/PLA based composites [114].
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Figure 14. Injection-blow moulded bottles made from cotton/PLA based composites [115].
Figure 14. Injection-blow moulded bottles made from cotton/PLA based composites [115].
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Figure 15. Food packaging from PLA and wood fibres [116].
Figure 15. Food packaging from PLA and wood fibres [116].
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Figure 16. Food packaging from cassava starch and plant celluloses [117].
Figure 16. Food packaging from cassava starch and plant celluloses [117].
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Figure 17. Laptop packaging made from blend of sustainable plant fibres [118].
Figure 17. Laptop packaging made from blend of sustainable plant fibres [118].
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Figure 18. Mobile box made of natural fibres [119].
Figure 18. Mobile box made of natural fibres [119].
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Figure 19. Electronic packaging for lamp bulb is made of recycle paper pulp [120].
Figure 19. Electronic packaging for lamp bulb is made of recycle paper pulp [120].
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Table 1. Comparison between natural and glass fibres [12].
Table 1. Comparison between natural and glass fibres [12].
Natural FibresGlass Fibres
Low densityThe density is twice of natural fibres
Low costIt is low cost but higher than natural fibres
Renewability and recyclabilityNot renewable and recyclable
Low energy consumptionHigh energy consumption
Wide distributionWide distribution
No abrasion to machinesAbrasion to the machines
No health risk when inhaledHealth risk when inhaled
Table 2. Advantages and disadvantages of natural fibres [7,9,17].
Table 2. Advantages and disadvantages of natural fibres [7,9,17].
Lower specific weight results in a higher specific strength and stiffness than glassLower mechanical properties especially impact resistance
Renewable resourceHeterogeneous quality
Production with low investment at low costMoisture sensitivity
Low abrasion, therefore tool wearLow thermal stability
Non toxicLow durability
Abundantly availablePoor fire resistance
BiodegradablePoor fibre-matrix adhesion
Thermal recycling is possiblePrice fluctuation by harvest results or agricultural politics
Table 3. Physical and mechanical properties of natural fibres and glass fibres [7,18,30,35,36].
Table 3. Physical and mechanical properties of natural fibres and glass fibres [7,18,30,35,36].
FibreLength of Fibre (mm)Diameter of Fibre (µm)Density (g/cm3)Tensile Strength (MPa)Young’s Modulus (GPa)Elongation at Break (%)
Oil palm fibre0.89–0.9919.1–250.7–1.552483.22.5
Table 4. Chemical components of different fibres [30,32,46].
Table 4. Chemical components of different fibres [30,32,46].
Chemical Component (%)Bamboo FibreJute FibreFlax Fibre
Aqueous extract3.163.065.74
Table 5. Mechanical properties of natural fibre fabric-PLA composites.
Table 5. Mechanical properties of natural fibre fabric-PLA composites.
FabricFibre Volume Fraction (%)Fibre Weight Fraction (%)Tensile Strength (MPa)Tensile Modulus (GPa)Flexural Strength (MPa)Flexural Modulus (MPa)Reference
Bamboo fabric-3580.645.921434495[23]
Bamboo fabric51-77.581.75--[28]
Flax fabric-30211.37--[60]
Kenaf textiles--82.28---[61]
Plain weave hemp fabrics (20%)--643.2--[62]
Twill weaves hemp fabrics (20%)--703.5--[62]
Denim fabric (3 layers)--754.6--[5]
Lyocell/hemp mixture-3096.0111.15--[64]
Manicaria Saccifera--68.454.89133.123.94[65]
Table 6. Chronological order of events in the exploration of natural fibre fabric-biopolymer composites and their related applications.
Table 6. Chronological order of events in the exploration of natural fibre fabric-biopolymer composites and their related applications.
YearNatural Fibre FabricBiopolymersStudyApplicationsReference
2000Jute fabricBiopolStudy the effects of various chemical surface modifications of jute fabrics as means of improving its suitability as a reinforcement in Biopol based compositesBiocomposites[103]
2007Flax fabricSoy protein resinFabrication of environment-friendly ‘green’ composites using modified soy protein concentrate based resinsBiocomposites[104]
2009Jute fabricPoly(butylene succinate) (PBS)Study the biodegradability of poly(butylene succinate) (PBS)/jute compositesBiocomposites[105]
2010Flax non-wovenpolyhydroxybutyrate (PHB) and its copolymer with hydroxyvalerate (HV)Study the influence of addition of flax fibres on the mechanical properties of PHB and PHB/HV copolymerBiocomposites[106]
2010Denim fabricPoly (lactic) acid (PLA)To improve the mechanical and thermal properties of PLA resin by using denim woven fabricsBiocomposites[5]
2012Twill and plain weave hemp fabricPoly (lactic) acid (PLA)Examine the physical behaviour of hemp/poly(lactic acid) (PLA) composites, particularly the thermal properties and viscoelastic behaviourBiocomposites[62]
2012Bamboo fabricPoly (lactic) acid (PLA)Study the development and mechanical characterization of a composite material fabricated from both renewable resources and biodegradable materials: bamboo woven fabric as reinforcement and polylactic acid (PLA) as resin matrixBiocomposites[28]
2012Woven and non-woven jute fabricSoy resinStudy the mechanical and biodegradation properties of jute, soy matrix and their compositesBiocomposites[107]
2012Woven hemp fabricPolyhydroxybutyrate (PHB)PHB polymer films and PHB-hemp fabric bio-based composites are subjected to two accelerated weathering proceduresBiocomposites[108]
2013Sterculia urens uniaxial fabricPoly (lactic) acid (PLA)The effect of fabric surface-treatments on the mechanical and thermal properties of the biocomposites were studied, in order to ascertain whether the PLA and S. urens fabric system could effectively be used for making biocomposites suitable for packaging applicationsPackaging applications[109]
2013Bamboo fabricPoly (lactic) acid (PLA)Study the influence of the manufacturing parameters on the mechanical properties of bamboo fabric-PLA prepared via compression moulding method by using Taguchi experimental design approachBiocomposites[23]
2014Bamboo fabricPoly (lactic) acid (PLA)To explore the potential of using totally green composites made from renewable resources in packaging applications as compared to conventional thermoplasticsPackaging applications[69]
2015Flax fabricPolyhydroxybutyrate (PHB)The phenolic contents of flax fibre is studied in more detail in order to determine the impact of the modification on phenylpropanoid metabolism and establish the usefulness of flax products from PHB-overexpressing plants for biomedical applications, particularly wound dressing productionBiomedical applications[110]
2015Bark cloth extracted from F. natalensisBiodegradable epoxy resinExploratory investigation of F. natalensis barks cloth as a reinforcement of new and biodegradable epoxy resin. Develop biodegradable bark cloth reinforced green epoxy composites with view of application to automotive instrument panelsAutomotive instrument panel[111]
2016Hemp, lyocel fabricPoly (lactic) acid (PLA)Compare the mechanical characteristics of uniaxial composites fabricated from reinforcement made from hemp/PLA, hemp–Lyocell/PLA and Lyocell/PLA wrap spun hybrid yarnsBiocomposites[64]
2016Manicaria Saccifera palm fabricPoly (lactic) acid (PLA)Present The development and thermo-mechanical characterization of a novel green composite lamina, made of Poly Lactic Acid (PLA) reinforced with a natural fabric extracted from Manicaria Saccifera palmBiocomposites[65]

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Nurul Fazita, M.R.; Jayaraman, K.; Bhattacharyya, D.; Mohamad Haafiz, M.K.; Saurabh, C.K.; Hussin, M.H.; H.P.S., A.K. Green Composites Made of Bamboo Fabric and Poly (Lactic) Acid for Packaging Applications—A Review. Materials 2016, 9, 435.

AMA Style

Nurul Fazita MR, Jayaraman K, Bhattacharyya D, Mohamad Haafiz MK, Saurabh CK, Hussin MH, H.P.S. AK. Green Composites Made of Bamboo Fabric and Poly (Lactic) Acid for Packaging Applications—A Review. Materials. 2016; 9(6):435.

Chicago/Turabian Style

Nurul Fazita, M.R., Krishnan Jayaraman, Debes Bhattacharyya, M.K. Mohamad Haafiz, Chaturbhuj K. Saurabh, M. Hazwan Hussin, and Abdul Khalil H.P.S. 2016. "Green Composites Made of Bamboo Fabric and Poly (Lactic) Acid for Packaging Applications—A Review" Materials 9, no. 6: 435.

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