Polymers from Biomass: Characterization, Modification, Degradation and Applications

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 July 2024 | Viewed by 1514

Special Issue Editors


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Guest Editor
Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)—National Scientifical and Technical Research Council (CONICET), Río Cuarto 5800, Argentina
Interests: conducting polymers; smart hydrogels; electrochemistry of materials; porous carbons
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Guest Editor
Department of Chemical Technology, Faculty of Engineering (UNRC), Research Institute for Energy Technologies and Advanced Materials (IITEMA), National University of Río Cuarto (UNRC)—National Scientifical and Technical Research Council (CONICET), Río Cuarto 5800, Argentina
Interests: biopolymers; surface modification; laser technology; conducting polymers; smart hydrogels; polymer technological applications

Special Issue Information

Dear Colleagues,

The macromolecules present in biomass (cellulose, lignin, chitin/chitosan, proteins, starch, etc.) are abundant and sustainable (biodegradable, biocompatible and with a low carbon footprint) materials. Moreover, they contain pendant functional groups that can be used to link a variety of functionalities. Such chemical modifications have been extensively employed in order to change the physicochemical properties (hydrophilicity/hydrophobicity, presence of fixed charges, solubility/dispersibility, etc.) of the polymers for industrial applications. However, the reasons behind the utilization of some experimental conditions are not clear. On the other hand, the field of bioconjugate chemistry has devised several modification procedures in order to incorporate functionalities that are mainly oriented towards microscopic detection. In this Special Issue, manuscripts that elucidate classical  procedures or the design of novel experimental procedures in order to modify macromolecules from biomass will be accepted. Moreover, studies that focus on the extension of those techniques to the incorporation of different functionalities (optical absorption and fluorescence, redox sites, ion exchange, etc.) in abundant biomacromolecules are welcome.

Prof. Dr. Cesar Alfredo Barbero
Dr. Diego Acevedo
Guest Editors

Manuscript Submission Information

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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. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

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Keywords

  • biomass
  • polymers
  • macromolecules
  • modified celluloses and starches
  • bioconjugated proteins
  • functionalized lignin
  • functionalized chitin and chitosan
  • crosslinked gels of biomacromolecules

Published Papers (1 paper)

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Research

24 pages, 5478 KiB  
Article
Tailoring Pectin-PLA Bilayer Film for Optimal Properties as a Food Pouch Material
by Nurul Saadah Said, Ibukunoluwa Fola Olawuyi and Won Young Lee
Polymers 2024, 16(5), 712; https://doi.org/10.3390/polym16050712 - 5 Mar 2024
Cited by 1 | Viewed by 1052
Abstract
This study focuses on developing a biodegradable film using a novel hybrid citrus peel pectin. A bilayer approach with PLA was proposed and optimized using Response Surface Methodology (RSM) to complement pectin films’ mechanical and barrier property limitations. The optimized film composition (2.90 [...] Read more.
This study focuses on developing a biodegradable film using a novel hybrid citrus peel pectin. A bilayer approach with PLA was proposed and optimized using Response Surface Methodology (RSM) to complement pectin films’ mechanical and barrier property limitations. The optimized film composition (2.90 g PLA and 1.96 g pectin) showed enhanced mechanical strength with a tensile strength (TS) of 7.04 MPa and an elongation at break (EAB) of 462.63%. In addition, it demonstrated lower water vapor (1.45 × 10−10 g/msPa), oxygen (2.79 × 10−7 g/ms) permeability, and solubility (23.53%). Compared to single-layer pectin films, the optimized bilayer film had a 25% increased thickness, significantly improved water barrier (3806 times lower) and oxygen barrier (3.68 times lower) properties, and 22.38 times higher stretchability, attributed to hydrogen bond formation, as confirmed by FTIR analysis. The bilayer film, effectively protected against UV and visible light, could be a barrier against light-induced lipid oxidation. Moreover, it demonstrated superior seal efficiency, ensuring secure sealing in practical applications. The bilayer pouch containing mustard dressing exhibited stable sealing with no leakage after immersion in hot water and ethanol, making it suitable for secure food pouch packaging. Full article
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