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Forests
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Advances in Wood- and Bamboo-Based Materials: Modification and Assessment
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Advances in Wood- and Bamboo-Based Materials: Modification and Assessment

A special issue of Forests (ISSN 1999-4907). This special issue belongs to the section "Wood Science and Forest Products".

Deadline for manuscript submissions: closed (31 January 2024) | Viewed by 3322

Special Issue Editors

Prof. Dr. Changhua Fang

E-Mail Website
Guest Editor
International Centre for Bamboo and Rattan, 8 Futong East Street, Chaoyang District, Beijing 100102, China
Interests: bamboo/wood modification; engineered bamboo/wood products; bamboo/wood properties
Dr. Meiling Chen

E-Mail Website
Guest Editor
College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Nanjing 210037, China
Interests: bamboo/wood modification; bamboo/wood structure and properties; engineered bamboo/wood composites
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Wood and bamboo have obvious environmental benefits in terms of natural carbon sequestration abilities. Promoting the development of wood/bamboo processing (modification, property improvement and assessment) according to local conditions is of great practical significance in the exploration of the potential application fields of wood/bamboo products and in reducing energy consumption and carbon emissions. Wood/bamboo modification is an all-encompassing term that refers to the process of altering the properties of a material through the use of chemical, mechanical, physical, or biological methods. In the interest of environmental protection, more environmentally friendly treatments utilizing non-toxic chemicals are strongly encouraged. As a result, advancements in the modification of wood- and bamboo-based composites are critical.

With the goal of highlighting recent advances in wood- and bamboo-based materials related to modification and assessment, this Special Issue will publish original research work or forward-looking literature reviews that focus on exploring wood/bamboo modification technologies, characterization, understanding the corresponding mechanisms of property improvement and applications of modified wood and bamboo-based composites. These areas include, but are not limited to, physical and chemical modification technologies involving new means of heat, light, electricity, sound, magnetism, biology and nanotechnology. Related works on advanced modified techniques and their practical applications in the abovementioned areas are also invited.

Prof. Dr. Changhua Fang
Dr. Meiling Chen
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Forests is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • wood and wood-based materials
  • bamboo and bamboo-based materials
  • modification
  • assessment
  • characterization

Published Papers (4 papers)

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Research

14 pages, 5639 KiB  
Article
Changes in Physical Properties and Microstructure of Bamboo–Plastic Composites with Different Bamboo Powder/Polybutylene Succinate Ratios, Polypropylene, and Polyethylene
by Sijie Niu, Ge Han, Xinran Chen, Jiale Liu and Chuangui Wang
Forests 2024, 15(3), 478; https://doi.org/10.3390/f15030478 - 04 Mar 2024
Viewed by 609
Abstract
As the most promising biomass material, bamboo has been widely used, but at the same time, it is subject to many problems, such as processing residues and the failure of high-value utilization of residues. In this paper, bamboo powder and polybutylene succinate (PBS) [...] Read more.
As the most promising biomass material, bamboo has been widely used, but at the same time, it is subject to many problems, such as processing residues and the failure of high-value utilization of residues. In this paper, bamboo powder and polybutylene succinate (PBS) were used as the main raw materials, and by changing the ratio of bamboo powder to PBS and adding polypropylene (PP) or polyethylene (PE) in combination with PBS, the effects of the ratio, as well as the effects of the use of PP and PE, on the physical–mechanical, thermal, and degradation properties of bamboo–plastic composites were investigated, and the microscopic changes of the materials were studied by chemical component analysis. The optimal formulation of bamboo powder/PBS composite material has been identified through experimentation, yielding a flexural strength of 24.87 MPa and a compressive strength of 29.74 MPa. This material can be used for outdoor furniture, wall panels, flooring, road barriers, and other applications, providing a new environmentally friendly approach to the consumption of residual bamboo materials. Full article
(This article belongs to the Special Issue Advances in Wood- and Bamboo-Based Materials: Modification and Assessment)
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14 pages, 4029 KiB  
Article
Mechanical and Antibacterial Properties of Bamboo Charcoal/ZnO-Modified Bamboo Fiber/Polylactic Acid Composites
by Chunlin Liu, Shuai Zhang, Shi Yan, Mingzhu Pan and Hui Huang
Forests 2024, 15(2), 371; https://doi.org/10.3390/f15020371 - 16 Feb 2024
Viewed by 604
Abstract
In this study, biodegradable bamboo fiber/PLA composites (BPCs) modified using bamboo charcoal (BC)/ZnO were prepared. The effects of BC/ZnO addition on the mechanical properties and antibacterial properties of BPCs were investigated. The chemical structure, microscopic morphology, and crystallization of the composites were analyzed [...] Read more.
In this study, biodegradable bamboo fiber/PLA composites (BPCs) modified using bamboo charcoal (BC)/ZnO were prepared. The effects of BC/ZnO addition on the mechanical properties and antibacterial properties of BPCs were investigated. The chemical structure, microscopic morphology, and crystallization of the composites were analyzed using FTIR, SEM, and XRD, respectively. The results showed that in terms of mechanical strength, when the addition of BC was 2%, the tensile impact and flexural strength of the BPCs were most obviously improved, with a tensile strength of 51.6 MPa. However, when the addition of BC was more than 2%, the uneven dispersion of too much BC in the BPCs resulted in a reduction in their mechanical strength. A certain amount of ZnO did not affect the crystallinity of the BPCs. In addition, the uneven distribution of ZnO and its poor compatibility with PLA resulted in a deterioration in the tensile properties of the BPCs. In terms of antibacterial properties, when 2% ZnO was added, the BPCs had better antibacterial properties against Escherichia coli and Staphylococcus aureus, with values of 58.9% and 52.5% against both, respectively. BPC biodegradable materials with both mechanical strength and antimicrobial properties have promising medical uses. Full article
(This article belongs to the Special Issue Advances in Wood- and Bamboo-Based Materials: Modification and Assessment)
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14 pages, 7202 KiB  
Article
The Preparation and Performance of Bamboo Waste Bio-Oil Phenolic Resin Adhesives for Bamboo Scrimber
by Chunmiao Li, Xueyong Ren, Shanyu Han, Yongxia Li and Fuming Chen
Forests 2024, 15(1), 79; https://doi.org/10.3390/f15010079 - 30 Dec 2023
Viewed by 894
Abstract
Bamboo is a fast-growing plant with properties such as low cost, abundant resources, and good carbon sequestration effect. However, the swift growth of bamboo resources generates an immense quantity of processing waste, which is necessary to effectively utilize bamboo processing waste. The leftovers [...] Read more.
Bamboo is a fast-growing plant with properties such as low cost, abundant resources, and good carbon sequestration effect. However, the swift growth of bamboo resources generates an immense quantity of processing waste, which is necessary to effectively utilize bamboo processing waste. The leftovers from bamboo processing can be reutilized by fast pyrolysis to prepare renewable bio-oil. In this study, bamboo bio-oil was partially substituted for phenol to synthesize phenolic resin with different substitution rates under the action of an alkaline catalyst, and then to serve as the adhesive to produce bamboo scrimber. Bamboo bundles were impregnated with synthetic bio-oil phenolic resin to create bamboo scrimber, which was subsequently hot-pressed. The research shows that modified phenolic resins with a bio-oil substitution rate of under 30% have good physical and chemical properties, while the free aldehyde content of phenolic resin with 40% bio-oil substitution exceeds the limit value (0.3%) specified in the Chinese National Standard. The thermal stability of phenolic resins was also increased after bio-oil modification, indicated by the movement of the TG curve to higher temperature ranges. It was found that the bamboo scrimber prepared with 20% BPF resin adhesive had the best comprehensive properties of a good mechanical strength, hydrophobicity, and mildew resistance, particularly with an elastic modulus of 9269 MPa and a static bending strength of 143 MPa. The microscopic morphology showed that the BPF resin was well impregnated into the interior of the bamboo bundle and had a compact bonding structure within the bamboo scrimber. The anti-mold performance experiment found that the bio-oil-modified resin increased the anti-mold level of the bamboo scrimber from slightly corrosion-resistant to strong corrosion-resistant. The conclusions obtained from this study have a good reference value for achieving the comprehensive utilization of bamboo, helping to promote the use of all components, reduce the production cost of bamboo scrimber, and improve its mildew resistance performance. This provides new ideas for the development of low-cost mildew resistant bamboo scrimber novel materials. Full article
(This article belongs to the Special Issue Advances in Wood- and Bamboo-Based Materials: Modification and Assessment)
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15 pages, 6737 KiB  
Article
Effects of Microstructure and Chemical Composition on the Visual Characteristics of Flattened Bamboo Board
by Lisheng Chen, Caiping Lian, Meiling Chen and Zhihui Wu
Forests 2023, 14(11), 2220; https://doi.org/10.3390/f14112220 - 10 Nov 2023
Viewed by 841
Abstract
Flattened bamboo board is a new type of bamboo-based panel with various colors that maintains the natural texture of bamboo, and is gradually being used in indoor home decoration. Revealing the influence mechanism on the visual effect of flattened bamboo boards is the [...] Read more.
Flattened bamboo board is a new type of bamboo-based panel with various colors that maintains the natural texture of bamboo, and is gradually being used in indoor home decoration. Revealing the influence mechanism on the visual effect of flattened bamboo boards is the key to improving the processing of such boards for household materials. This study employed visual physical quantity measurement methods, field emission scanning electron microscopy, FTIR spectroscopy, and XPS to investigate the visual physical quantities, morphology, and chemical composition of flattened bamboo boards. The results showed that compared with the control samples, the bamboo outer layer boards were dark brown, with the largest ΔE* (38.55), while the outer boards were reddish-brown, with the largest a* (8.82). The inner boards were yellow-red and showed a lower ΔE* (6.55). Due to the elevated density, abundant inclusion, and wax, the bamboo outer layer board exhibited the highest glossiness and darkest color, followed by the outer board and the inner board. The FTIR spectroscopy revealed that hemicellulose decomposed, and the relative content of lignin increased, leading to color changes in the flattened bamboo boards. The bamboo outer layer board was the darkest due to changes in C=C bonds at 1600 cm−1 and 1509 cm−1. The surface color of the outer board was mainly red, which may be caused by C–O bonds at 1239 cm−1. The surface of the inner board was mainly yellow, which may be caused by the C–H stretching vibration of lignin at 1108 cm−1. XPS analysis showed that the proportion of C1 and O1 increased, while C2, C3, and O2 decreased, indicating that hemicellulose degraded at high temperatures, which increased the relative lignin content. Changes in the relative content of oxygen-containing functional groups and SiO2 in the flattened bamboo board were important factors responsible for the change in visual physical quantities. Full article
(This article belongs to the Special Issue Advances in Wood- and Bamboo-Based Materials: Modification and Assessment)
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