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Recent Advances in Sustainable and Recyclable Polymer Materials from Renewable Resources

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

Deadline for manuscript submissions: closed (31 December 2025) | Viewed by 1575

Editors


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Guest Editor
School of Chemical Engineering, National Technical University of Athens, Athens, Greece
Interests: environmental biotechnology; environmental engineering; anaerobic digestion; dark fermentation; wastewater treatment; solid waste treatment (compost, biofuels and high value-added products from waste and bio-based raw materials such as food waste, industrial and agricultural wastes); photocatalysis from photovoltaic panels
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Laboratory of Inorganic and Analytical Chemistry, School of Chemical Engineering, Zografou Campus, National Technical University of Athens, 15773 Athens, Greece
Interests: environmental technologies; biotechnology; metal recovery; waste management; renewable energy sources
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Growing environmental concerns and the depletion of fossil fuel reserves have intensified the search for sustainable alternatives to conventional petroleum-based polymers. Recent advances in polymer science have led to the development of sustainable and recyclable polymer materials derived from renewable resources such as plant biomass, natural oils, starch, and microbial sources. This review highlights the cutting-edge progress being made in the synthesis, characterization, and use of bio-based polymers, including polylactic acid (PLA), polyhydroxyalkanoates (PHAs), bio-polyethylene, and novel lignin- and cellulose-derived polymers. Emphasis is placed on innovative strategies for enhancing the recyclability, biodegradability, and performance of these materials through chemical modification, copolymerization, and advanced processing techniques. Furthermore, emerging technologies such as dynamic covalent chemistry and closed-loop recycling systems are discussed for their potential to enable circular life cycles. The convergence of green chemistry principles with advanced material design offers promising pathways toward a more sustainable polymer industry and a reduced environmental footprint.

Dr. Konstantina Papadopoulou
Dr. Kyriaki Kiskira
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 250 words) can be sent to the Editorial Office for assessment.

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-anonymized 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

  • sustainable polymers
  • renewable resources
  • biodegradable plastics
  • bio-based materials
  • polymer recycling
  • green chemistry
  • circular economy
  • polylactic acid (PLA)
  • polyhydroxyalkanoates (PHAs)
  • lignin-based polymers
  • cellulose-derived polymers

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Published Papers (1 paper)

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Research

16 pages, 1410 KB  
Article
The Effect of Organic Loading and Mode of Operation in a Sequencing Batch Reactor Producing PHAs from a Medium Corresponding to Condensate from Food Waste Drying
by Konstantina Filippou, Konstantina Diamantopoulou, Melisa Gatzia, Ioanna Ntaikou, Konstantina Papadopoulou and Gerasimos Lyberatos
Polymers 2025, 17(24), 3270; https://doi.org/10.3390/polym17243270 - 9 Dec 2025
Viewed by 1215
Abstract
This study evaluated polyhydroxyalkanoates (PHAs) production from a medium corresponding to the condensate derived from food waste drying, using a mixed microbial culture in a 15 L Sequencing Batch Reactor (SBR). The reactor operation comprised two distinct periods to investigate the impact of [...] Read more.
This study evaluated polyhydroxyalkanoates (PHAs) production from a medium corresponding to the condensate derived from food waste drying, using a mixed microbial culture in a 15 L Sequencing Batch Reactor (SBR). The reactor operation comprised two distinct periods to investigate the impact of varying organic loading rates on biomass performance and polymer accumulation. In Period 1, when the soluble Chemical Oxygen Demand (sCOD) was 6.8 ± 1.4 g/L, efficient nitrogen limitation promoted complete urea consumption and stable biomass growth, yielding higher intracellular PHA accumulation (11.74 ± 6.01%). The microbial community exhibited a balanced copolymer production (HB:HV ratio of approximately 54:46). Conversely, Period 2, characterized by higher organic loads (sCOD 12.1 ± 2.9 g/L), displayed incomplete urea utilization, reduced biomass viability, and significantly lower PHA accumulation (5.26 ± 2.53%). A second set of experiments aiming at the assessment of the impact of operation mode (with and without inclusion of a settling phase) demonstrated that removal of settling leads to a stable long-term steady-state operation with enriched PHA-accumulating bacteria and increased polymer storage capacity. Full article
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