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Polymers
Special Issues
Biopolymers from Agricultural Waste
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Biopolymers from Agricultural Waste

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Circular and Green Polymer Science".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 8252

Special Issue Editor

Dr. Dimitrios Arapoglou

E-Mail Website
Guest Editor
Hellenic Agricultural Organization-DEMETER, Institute of Technology of Agricultural Products, Lab of Food Biotechnology and Recycling of Agricultural By-Products, Sof. Venizelou 1, 14123 Lykovrissi, Attica, Greece
Interests: agricultural by-products and wastes valorization and recycling; waste treatment for the production of value-added biotechnology products; production of protein-enriched feed using agro-industrial residues as substrates; biofuel/bioenergy production; bioactive compounds

Special Issue Information

Dear Colleagues,

According to the UN, plastic accounts for 90% of ocean pollution, and it takes hundreds of years for it to decompose. The bottles, packages and bags we use every day create plastic “continents” in the oceans, endangering animals and polluting the environment. On the other hand, there are few environmentally friendly alternatives. The production of biodegradable plastics with increased safety and environmental compatibility is essential. Biologically based plastics can come from renewable sources such as agricultural waste, vegetable plants and oils, shavings, etc., and are a possible alternative to fossil-derived synthetic plastics. The use of agricultural waste for the production of biodegradable plastics is in line with the concept of the circular economy and at the same time helps to address the problem of crop residue management. Additionally, the use of “green” polymers with desired properties will lead to the improvement of sustainable processes, which are currently receiving significant attention in order to preserve the environment.

The aim of this Special Issue is to publish original articles, critical reviews, research notes, analyses, case studies and short communications relating to innovation processes and methodologies concerning the use of agricultural waste for bioplastic production.

Dr. Dimitrios Arapoglou
Guest Editor

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. Polymers is an international peer-reviewed open access semimonthly 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 2700 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

  • agricultural waste
  • bioplastic
  • biodegradable polymers
  • packaging application
  • biodegradation

Published Papers (3 papers)

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Research

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15 pages, 1929 KiB  
Article
Properties and Hydrolysis Behavior of Celluloses of Different Origin
by Ekaterina I. Kashcheyeva, Yulia A. Gismatulina, Galina F. Mironova, Evgenia K. Gladysheva, Vera V. Budaeva, Ekaterina A. Skiba, Vladimir N. Zolotuhin, Nadezhda A. Shavyrkina, Aleksey N. Kortusov and Anna A. Korchagina
Polymers 2022, 14(18), 3899; https://doi.org/10.3390/polym14183899 - 18 Sep 2022
Cited by 4 | Viewed by 1763
Abstract
The present paper is a fundamental study on the physicochemical properties and hydrolysis behavior of cellulose samples differing in origin: bacterial, synthetic, and vegetal. Bacterial cellulose was produced by Medusomyces gisevii Sa-12 in an enzymatic hydrolyzate derived from oat-hull pulp. Synthetic cellulose was [...] Read more.
The present paper is a fundamental study on the physicochemical properties and hydrolysis behavior of cellulose samples differing in origin: bacterial, synthetic, and vegetal. Bacterial cellulose was produced by Medusomyces gisevii Sa-12 in an enzymatic hydrolyzate derived from oat-hull pulp. Synthetic cellulose was obtained from an aqueous glucose solution by electropolymerization. Plant-based cellulose was isolated by treatment of Miscanthus sacchariflorus with dilute NaOH and HNO3 solutions. We explored different properties of cellulose samples, such as chemical composition, degree of polymerization (DP), degree of crystallinity (DC), porosity, and reported infrared spectroscopy and scanning electron microscopy results. The hydrolysis behavior was most notable dependent on the origin of cellulose. For the bacterial cellulose sample (2010 DP, 90% DC, 89.4% RS yield), the major property affecting the hydrolysis behavior was its unique nanoscale reticulate structure promoting fast penetration of cellulases into the substrate structure. The study on enzymatic hydrolysis showed that the hydrolysis behavior of synthetic and Miscanthus celluloses was most influenced by the substrate properties such as DP, DC and morphological structure. The yield of reducing sugars (RS) by hydrolysis of synthetic cellulose exhibiting a 3140 DP, 80% DC, and highly depolymerization-resistant fibers was 27%. In contrast, the hydrolysis of Miscanthus-derived cellulose with a 1030 DP, 68% DC, and enzyme-accessible fibers provided the highest RS yield of 90%. The other properties examined herein (absence/presence of non-cellulosic impurities, specific surface, pore volume) had no considerable effect on the bioconversion of the cellulosic substrates. Full article
(This article belongs to the Special Issue Biopolymers from Agricultural Waste)
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Review

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14 pages, 4455 KiB  
Review
Review of Current Prospects for Using Miscanthus-Based Polymers
by Nadezhda A. Shavyrkina, Vera V. Budaeva, Ekaterina A. Skiba, Yulia A. Gismatulina and Gennady V. Sakovich
Polymers 2023, 15(14), 3097; https://doi.org/10.3390/polym15143097 - 20 Jul 2023
Cited by 4 | Viewed by 1476
Abstract
Carbon neutrality is a requisite for industrial development in modern times. In this paper, we review information on possible applications of polymers from the energy crop Miscanthus in the global industries, and we highlight the life cycle aspects of Miscanthus in detail. We [...] Read more.
Carbon neutrality is a requisite for industrial development in modern times. In this paper, we review information on possible applications of polymers from the energy crop Miscanthus in the global industries, and we highlight the life cycle aspects of Miscanthus in detail. We discuss the benefits of Miscanthus cultivation on unoccupied marginal lands as well as the rationale for the capabilities of Miscanthus regarding both soil carbon storage and soil remediation. We also discuss key trends in the processing of Miscanthus biopolymers for applications such as a fuel resources, as part of composite materials, and as feedstock for fractionation in order to extract cellulose, lignin, and other valuable chemicals (hydroxymethylfurfural, furfural, phenols) for the subsequent chemical synthesis of a variety of products. The potentialities of the biotechnological transformation of the Miscanthus biomass into carbohydrate nutrient media and then into the final products of microbiological synthesis are also examined herein. Full article
(This article belongs to the Special Issue Biopolymers from Agricultural Waste)
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19 pages, 4105 KiB  
Review
A Review on Flexural Properties of Wood-Plastic Composites
by Bingyu Jian, Sarah Mohrmann, Haitao Li, Yuanjie Li, Mahmud Ashraf, Jun Zhou and Xiaoyan Zheng
Polymers 2022, 14(19), 3942; https://doi.org/10.3390/polym14193942 - 21 Sep 2022
Cited by 11 | Viewed by 3933
Abstract
Wood–plastic composite (WPC) is a kind of composite material that is made of plastic and wood fiber or wood powder. Because it is mothproof, is resistant to corrosion, and has plasticity, among other advantages, it has been researched and used increasingly in building [...] Read more.
Wood–plastic composite (WPC) is a kind of composite material that is made of plastic and wood fiber or wood powder. Because it is mothproof, is resistant to corrosion, and has plasticity, among other advantages, it has been researched and used increasingly in building materials. The flexural property of WPC is an important subject in evaluating its mechanical properties. In this paper, wood–plastic raw materials and processing technology are introduced; the internal and external factors of WPC which affect the flexural properties are analyzed; the different ways of enhancing the bending capacity, including the surface pretreatment, addition of different modifiers (compatibility agent and coupling agent) etc. are summarized; and the methods of operation and strengthening effect are analyzed. This work provides a reference for further research in related fields. Full article
(This article belongs to the Special Issue Biopolymers from Agricultural Waste)
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