Advanced Biopolymers and Biocomposites

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Biomacromolecules, Biobased and Biodegradable Polymers".

Deadline for manuscript submissions: 30 September 2024 | Viewed by 3724

Special Issue Editors


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Guest Editor
The Department of Oil, Gas and Solid Fuel Refining Technologies, National Technical University «Kharkiv Polytechnic Institute», 61002 Kharkiv, Ukraine
Interests: polymers; coal; humic acids; coke; heating value

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Guest Editor
The Department of Plastics and Biologically Active Polymers Technology, National Technical University «Kharkiv Polytechnic Institute», 61002 Kharkiv, Ukraine
Interests: biopolymers; biocomposite; eco-friendly; biodegradable; films; environmentally safe; humic; hybrid; ecology

Special Issue Information

Dear Colleagues,

Currently, the most relevant trend in the field of polymer materials science is the design and use of various biopolymers and biocomposites, which solve the challenges and threats associated with the ecological state of the environment and the depletion of oil resources. With such effective biopolymers and biocomposites, it is possible to combine a high level of operational characteristics with the ability to biodegrade in natural conditions without the formation of environmentally hazardous substances. This Special Issue presents advanced research on the subject of synthesis and studies the structure of the latest highly effective and durable biopolymers and biocomposites with a unique set of functional characteristics. A modern overview of scientific developments is presented in the direction of the foundations of the creation of a new generation of composite and polymer materials based on biopolymers of various natures with the use of a multifunctional range of modifiers and fillers (carbon, ceramic and nanofillers, synthetic and natural fibers), with the aim of providing them with specific and unique properties. The designed advanced biopolymers and biocomposites can be used in various branches of modern industry, such as automotive, construction, electronics, containers and packaging, medicine, pharmaceutical engineering, etc. This Special Issue also discusses the most effective methods of synthesis and design of advanced biopolymers and biocomposites in order to achieve broad functional physical, chemical, and biological capabilities.

Prof. Dr. Denis Miroshnichenko
Dr. Vladimir Lebedev
Guest Editors

Manuscript Submission Information

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Keywords

  • biopolymer
  • biocomposite
  • design
  • synthesis
  • advanced structure
  • properties
  • biodegradability
  • application

Published Papers (3 papers)

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Research

20 pages, 9578 KiB  
Article
Valorization of Agricultural Waste Lignocellulosic Fibers for Poly(3-Hydroxybutyrate-Co-Valerate)-Based Composites in Short Shelf-Life Applications
by Kerly Samaniego-Aguilar, Estefanía Sánchez-Safont, Andreina Rodríguez, Anna Marín, María V. Candal, Luis Cabedo and Jose Gamez-Perez
Polymers 2023, 15(23), 4507; https://doi.org/10.3390/polym15234507 - 23 Nov 2023
Cited by 1 | Viewed by 798
Abstract
Biocircularity could play a key role in the circular economy, particularly in applications where organic recycling (composting) has the potential to become a preferred waste management option, such as food packaging. The development of fully biobased and biodegradable composites could help reduce plastic [...] Read more.
Biocircularity could play a key role in the circular economy, particularly in applications where organic recycling (composting) has the potential to become a preferred waste management option, such as food packaging. The development of fully biobased and biodegradable composites could help reduce plastic waste and valorize agro-based residues. In this study, extruded films made of composites of polyhydroxybutyrate-co-valerate (PHBV) and lignocellulosic fibers, namely almond shell (AS) and Oryzite® (OR), a polymer hybrid composite precursor, have been investigated. Scanning electron microscopy (SEM) analysis revealed a weak fiber–matrix interfacial interaction, although OR composites present a better distribution of the fiber and a virtually lower presence of “pull-out”. Thermogravimetric analysis showed that the presence of fibers reduced the onset and maximum degradation temperatures of PHBV, with a greater reduction observed with higher fiber content. The addition of fibers also affected the melting behavior and crystallinity of PHBV, particularly with OR addition, showing a decrease in crystallinity, melting, and crystallization temperatures as fiber content increased. The mechanical behavior of composites varied with fiber type and concentration. While the incorporation of AS results in a reduction in all mechanical parameters, the addition of OR leads to a slight improvement in elongation at break. The addition of fibers improved the thermoformability of PHBV. In the case of AS, the improvement in the processing window was achieved at lower fiber contents, while in the case of OR, the improvement was observed at a fiber content of 20%. Biodisintegration tests showed that the presence of fibers promoted the degradation of the composites, with higher fiber concentrations leading to faster degradation. Indeed, the time of complete biodisintegration was reduced by approximately 30% in the composites with 20% and 30% AS. Full article
(This article belongs to the Special Issue Advanced Biopolymers and Biocomposites)
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14 pages, 16843 KiB  
Article
Structural, Thermal, Rheological, and Morphological Characterization of the Starches of Sweet and Bitter Native Potatoes Grown in the Andean Region
by Olivia Magaly Luque-Vilca, Noe Benjamin Pampa-Quispe, Augusto Pumacahua-Ramos, Silvia Pilco-Quesada, Domingo Jesús Cabel Moscoso and Tania Jakeline Choque-Rivera
Polymers 2023, 15(22), 4417; https://doi.org/10.3390/polym15224417 - 16 Nov 2023
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Abstract
This study aimed to extract and characterize the morphological, physicochemical, thermal, and rheological properties of the starches of native potatoes grown in the department of Puno. Among the varieties evaluated were sweet native potato varieties Imilla Negra (Solanum tuberosum spp. Andígena), [...] Read more.
This study aimed to extract and characterize the morphological, physicochemical, thermal, and rheological properties of the starches of native potatoes grown in the department of Puno. Among the varieties evaluated were sweet native potato varieties Imilla Negra (Solanum tuberosum spp. Andígena), Imilla Blanca (Solanum tuberosum spp. Andígena), Peruanita, Albina or Lomo (Solanum chaucha), and Sutamari, and the bitter potatoes Rucki or Luki (Solanum juzepczukii Buk), Locka (Solanum curtilobum), Piñaza (Solanum curtilobum), and Ocucuri (Sola-num curtilobum), acquired from the National Institute of Agrarian Innovation (INIA-Puno). The proximal composition, amylose content, and morphological, thermal, and rheological properties that SEM, DSC, and a rheometer determined, respectively, were evaluated, and the data obtained were statistically analyzed using a completely randomized design and then a comparison of means using Tukey’s LSD test. The results show a significant difference in the proximal composition (p ≤ 0.05) concerning moisture content, proteins, fat, ash, and carbohydrates. Thus, the amylose content was also determined, ranging from 23.60 ± 0.10 to 30.33 ± 0.15%. The size morphology of the granules is 13.09–47.73 µm; for the thermal and rheological properties of the different varieties of potato starch, it is shown that the gelatinization temperature is in a range of 57 to 62 °C and, for enthalpy, between 3 and 5 J/g. Full article
(This article belongs to the Special Issue Advanced Biopolymers and Biocomposites)
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18 pages, 4038 KiB  
Article
Bimetal–Organic Framework-Loaded PVA/Chitosan Composite Hydrogel with Interfacial Antibacterial and Adhesive Hemostatic Features for Wound Dressings
by Nan Zhang, Xiuwen Zhang, Yueyuan Zhu, Dong Wang, Ren Li, Shuangying Li, Ruizhi Meng, Zhihui Liu and Dan Chen
Polymers 2023, 15(22), 4362; https://doi.org/10.3390/polym15224362 - 9 Nov 2023
Cited by 3 | Viewed by 1263
Abstract
Silver-containing wound dressings have shown attractive advantages in the treatment of wound infection due to their excellent antibacterial activity. However, the introduction of silver ions or AgNPs directly into the wound can cause deposition in the body as particles. Here, with the aim [...] Read more.
Silver-containing wound dressings have shown attractive advantages in the treatment of wound infection due to their excellent antibacterial activity. However, the introduction of silver ions or AgNPs directly into the wound can cause deposition in the body as particles. Here, with the aim of designing low-silver wound dressings, a bimetallic-MOF antibacterial material called AgCu@MOF was developed using 3, 5-pyridine dicarboxylic acid as the ligand and Ag+ and Cu2+ as metal ion sites. PCbM (PVA/chitosan/AgCu@MOF) hydrogel was successfully constructed in PVA/chitosan wound dressing loaded with AgCu@MOF. The active sites on the surface of AgCu@MOF increased the lipophilicity to bacteria and caused the bacterial membrane to undergo lipid peroxidation, which resulted in the strong bactericidal properties of AgCu@MOF, and the antimicrobial activity of the dressing PCbM was as high as 99.9%. The chelation of silver ions in AgCu@MOF with chitosan occupied the surface functional groups of chitosan and reduced the crosslinking density of chitosan. PCbM changes the hydrogel crosslinking network, thus improving the water retention and water permeability of PCbM hydrogel so that the hydrogel has the function of binding wet tissue. As a wound adhesive, PCbM hydrogel reduces the amount of wound bleeding and has good biocompatibility. PCbM hydrogel-treated mice achieved 96% wound recovery on day 14. The strong antibacterial, tissue adhesion, and hemostatic ability of PCbM make it a potential wound dressing. Full article
(This article belongs to the Special Issue Advanced Biopolymers and Biocomposites)
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