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Research Progress of Biodegradable Materials

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Materials Science".

Deadline for manuscript submissions: closed (30 September 2024) | Viewed by 16130

Special Issue Editors


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Guest Editor
Department of Chemical Sciences, University of Naples “Federico II”, Complesso Universitario di Monte Sant’Angelo, 80126 Naples, Italy
Interests: hydrocolloid-based films; renewable sources; microbial transglutaminase; film technological features
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Guest Editor
Department of Chemical Sciences, University of Naples “Federico II”, 80126 Naples, Italy
Interests: biotechnological applications of microorganisms; fermentative production of biomolecules; raw sources as substrates for microbial growth

Special Issue Information

Dear Colleagues, 

Nowadays, new eco-friendly materials draw increasing interest due to the increased global awareness of environmental protection. In this regard, biodegradable materials that can be broken down by bacteria, fungi, or other biological processes are considered environmentally friendly products for their ability to decompose back into natural elements. These materials can further play a significant role in lowering environmental pollution when they are properly modified to acquire controllable degradation properties.

We invite investigators to contribute original research articles, as well as review articles, on research advances of the manufacture of novel biodegradable materials including but not limited to (1) the definition of different types of biodegradable materials; (2) the features of environmentally friendly and biodegradable material for use in daily life and industrial manufacturing; (3) how to address the market's demand for biodegradable materials in terms of cost and performance; (4) technologies for the manufacture of biodegradable materials with tailored functions; (5) different applications of biodegradable materials.

Dr. Concetta Valeria Lucia Giosafatto
Dr. Loredana Mariniello
Dr. Odile Francesca Restaino
Guest Editors

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Keywords

  • biodegradability
  • controlled biodegradability
  • bioplastics
  • renewable resources
  • environmental pollution
  • environmentally friendly materials

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Published Papers (5 papers)

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Research

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27 pages, 6987 KiB  
Article
Enzymatic Synthesis and Structural Modeling of Bio-Based Oligoesters as an Approach for the Fast Screening of Marine Biodegradation and Ecotoxicity
by Anamaria Todea, Ioan Bîtcan, Marco Giannetto, Iulia Ioana Rădoi, Raffaele Bruschi, Monia Renzi, Serena Anselmi, Francesca Provenza, Tecla Bentivoglio, Fioretta Asaro, Emanuele Carosati and Lucia Gardossi
Int. J. Mol. Sci. 2024, 25(10), 5433; https://doi.org/10.3390/ijms25105433 - 16 May 2024
Viewed by 1611
Abstract
Given the widespread use of esters and polyesters in products like cosmetics, fishing nets, lubricants and adhesives, whose specific application(s) may cause their dispersion in open environments, there is a critical need for stringent eco-design criteria based on biodegradability and ecotoxicity evidence. Our [...] Read more.
Given the widespread use of esters and polyesters in products like cosmetics, fishing nets, lubricants and adhesives, whose specific application(s) may cause their dispersion in open environments, there is a critical need for stringent eco-design criteria based on biodegradability and ecotoxicity evidence. Our approach integrates experimental and computational methods based on short oligomers, offering a screening tool for the rapid identification of sustainable monomers and oligomers, with a special focus on bio-based alternates. We provide insights into the relationships between the chemical structure and properties of bio-based oligomers in terms of biodegradability in marine environments and toxicity in benchmark organisms. The experimental results reveal that the considered aromatic monomers (terephthalic acid and 2,5-furandicarboxylic acid) accumulate under the tested conditions (OECD 306), although some slight biodegradation is observable when the inoculum derives from sites affected by industrial and urban pollution, which suggests that ecosystems adapt to non-natural chemical pollutants. While clean seas are more susceptible to toxic chemical buildup, biotic catalytic activities offer promise for plastic pollution mitigation. Without prejudice to the fact that biodegradability inherently signifies a desirable trait in plastic products, nor that it automatically grants them a sustainable “license”, this study is intended to facilitate the rational design of new polymers and materials on the basis of specific uses and applications. Full article
(This article belongs to the Special Issue Research Progress of Biodegradable Materials)
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23 pages, 4402 KiB  
Article
Toward the Improvement of Maleic Anhydride Functionalization in Polyhydroxybutyrate (PHB): Effect of Styrene Monomer and Sn(Oct)2 Catalyst
by Matheus Ferreira de Souza, Carlos Bruno Barreto Luna, Danilo Diniz Siqueira, Ewerton de Oliveira Teotônio Bezerra, Grazielle Rozendo de Cerqueira, Edcleide Maria Araújo and Renate Maria Ramos Wellen
Int. J. Mol. Sci. 2023, 24(19), 14409; https://doi.org/10.3390/ijms241914409 - 22 Sep 2023
Cited by 5 | Viewed by 1832
Abstract
In this work, polyhydroxybutyrate (PHB) was maleic anhydride (MA)-grafted in the molten state, using dicumyl peroxide (DCP) as a reaction initiator. Tin(II) 2-ethylhexanoate (Sn(Oct)2) and styrene monomer (St.) were used to maximize the maleic anhydride grafting degree. When PHB was modified [...] Read more.
In this work, polyhydroxybutyrate (PHB) was maleic anhydride (MA)-grafted in the molten state, using dicumyl peroxide (DCP) as a reaction initiator. Tin(II) 2-ethylhexanoate (Sn(Oct)2) and styrene monomer (St.) were used to maximize the maleic anhydride grafting degree. When PHB was modified with MA/DCP and MA/DCP/Sn(Oct)2, viscosity was reduced, suggesting chain scission in relation to pure PHB. However, when the styrene monomer was added, the viscosity increased due to multiple grafts of MA and styrene into the PHB chain. In addition, the FTIR showed the formation of a new band at 1780 cm−1 and 704 cm−1, suggesting a multiphase copolymer PHB-g-(St-co-MA). The PHB (MA/DCP) system showed a grafting degree of 0.23%; however, the value increased to 0.39% with incorporating Sn(Oct)2. The highest grafting efficiency was for the PHB (MA/DCP/St.) system with a value of 0.91%, while the PHB (MA/DCP/St./Sn(Oct)2) hybrid mixture was reduced to 0.73%. The chemical modification process of PHB with maleic anhydride increased the thermal stability by about 20 °C compared with pure PHB. The incorporation of 0.5 phr of the Sn(Oct)2 catalyst increased the efficiency of the grafting degree in the PHB. However, the St./Sn(Oct)2 hybrid mixture caused a deleterious effect on the maleic anhydride grafting degree. Full article
(This article belongs to the Special Issue Research Progress of Biodegradable Materials)
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16 pages, 4077 KiB  
Article
Physicochemical Characterization of Chitosan/Poly-γ-Glutamic Acid Glass-like Materials
by Sondos Hejazi, Odile Francesca Restaino, Mohammed Sabbah, Domenico Zannini, Rocco Di Girolamo, Angela Marotta, Sergio D’Ambrosio, Irene Russo Krauss, C. Valeria L. Giosafatto, Gabriella Santagata, Chiara Schiraldi and Raffaele Porta
Int. J. Mol. Sci. 2023, 24(15), 12495; https://doi.org/10.3390/ijms241512495 - 6 Aug 2023
Cited by 2 | Viewed by 2571
Abstract
This paper sets up a new route for producing non-covalently crosslinked bio-composites by blending poly-γ-glutamic acid (γ-PGA) of microbial origin and chitosan (CH) through poly-electrolyte complexation under specific experimental conditions. CH and two different molecular weight γ-PGA fractions have been blended at different [...] Read more.
This paper sets up a new route for producing non-covalently crosslinked bio-composites by blending poly-γ-glutamic acid (γ-PGA) of microbial origin and chitosan (CH) through poly-electrolyte complexation under specific experimental conditions. CH and two different molecular weight γ-PGA fractions have been blended at different mass ratios (1/9, 2/8 and 3/7) under acidic pH. The developed materials seemed to behave like moldable hydrogels with a soft rubbery consistency. However, after dehydration, they became exceedingly hard, glass-like materials completely insoluble in water and organic solvents. The native biopolymers and their blends underwent comprehensive structural, physicochemical, and thermal analyses. The study confirmed strong physical interactions between polysaccharide and polyamide chains, facilitated by electrostatic attraction and hydrogen bonding. The materials exhibited both crystalline and amorphous structures and demonstrated good thermal stability and degradability. Described as thermoplastic and saloplastic, these bio-composites offer vast opportunities in the realm of polyelectrolyte complexes (PECs). This unique combination of properties allowed the bio-composites to function as glass-like materials, making them highly versatile for potential applications in various fields. They hold potential for use in regenerative medicine, biomedical devices, food packaging, and 3D printing. Their environmentally friendly properties make them attractive candidates for sustainable material development in various industries. Full article
(This article belongs to the Special Issue Research Progress of Biodegradable Materials)
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Review

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26 pages, 13813 KiB  
Review
Poly(Propylene Carbonate)-Based Biodegradable and Environment-Friendly Materials for Biomedical Applications
by Li Wang, Yumin Li, Jingde Yang, Qianqian Wu, Song Liang and Zhenning Liu
Int. J. Mol. Sci. 2024, 25(5), 2938; https://doi.org/10.3390/ijms25052938 - 2 Mar 2024
Cited by 6 | Viewed by 2957
Abstract
Poly(propylene carbonate) (PPC) is an emerging “carbon fixation” polymer that holds the potential to become a “biomaterial of choice” in healthcare owing to its good biocompatibility, tunable biodegradability and safe degradation products. However, the commercialization and wide application of PPC as a biomedical [...] Read more.
Poly(propylene carbonate) (PPC) is an emerging “carbon fixation” polymer that holds the potential to become a “biomaterial of choice” in healthcare owing to its good biocompatibility, tunable biodegradability and safe degradation products. However, the commercialization and wide application of PPC as a biomedical material are still hindered by its narrow processing temperature range, poor mechanical properties and hydrophobic nature. Over recent decades, several physical, chemical and biological modifications of PPC have been achieved by introducing biocompatible polymers, inorganic ions or small molecules, which can endow PPC with better cytocompatibility and desirable biodegradability, and thus enable various applications. Indeed, a variety of PPC-based degradable materials have been used in medical applications including medical masks, surgical gowns, drug carriers, wound dressings, implants and scaffolds. In this review, the molecular structure, catalysts for synthesis, properties and modifications of PPC are discussed. Recent biomedical applications of PPC-based biomaterials are highlighted and summarized. Full article
(This article belongs to the Special Issue Research Progress of Biodegradable Materials)
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18 pages, 1580 KiB  
Review
Biodegradable Polymers in Biomedical Applications: A Review—Developments, Perspectives and Future Challenges
by Jagoda Kurowiak, Tomasz Klekiel and Romuald Będziński
Int. J. Mol. Sci. 2023, 24(23), 16952; https://doi.org/10.3390/ijms242316952 - 29 Nov 2023
Cited by 12 | Viewed by 6432
Abstract
Biodegradable polymers are materials that, thanks to their remarkable properties, are widely understood to be suitable for use in scientific fields such as tissue engineering and materials engineering. Due to the alarming increase in the number of diagnosed diseases and conditions, polymers are [...] Read more.
Biodegradable polymers are materials that, thanks to their remarkable properties, are widely understood to be suitable for use in scientific fields such as tissue engineering and materials engineering. Due to the alarming increase in the number of diagnosed diseases and conditions, polymers are of great interest in biomedical applications especially. The use of biodegradable polymers in biomedicine is constantly expanding. The application of new techniques or the improvement of existing ones makes it possible to produce materials with desired properties, such as mechanical strength, controlled degradation time and rate and antibacterial and antimicrobial properties. In addition, these materials can take virtually unlimited shapes as a result of appropriate design. This is additionally desirable when it is necessary to develop new structures that support or restore the proper functioning of systems in the body. Full article
(This article belongs to the Special Issue Research Progress of Biodegradable Materials)
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