Two types of copolymers--poly(ester-amide)s--by the anionic copolymerization of epsilon-caprolactam and epsilon-caprolactone, and aromatic-aliphatic copolyesters based on glycolyzed polyethylene terephthalate from used beverage bottles and epsilon-caprolactone were prepared. Biodegradation tests of these copolymers were performed by two methods, viz. composting under controlled conditions and treatment with ligninolytic fungi. Both methods resulted in degradation of the copolymers, composting being more robust. Out of fungal strains tested Inonotus hispidus degraded aromatic-aliphatic copolyesters most intensively.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF02931586 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Biobased Biodegradable Copolyesters from 2,5-Thiophenedicarboxylic Acid: Effect of Aliphatic Diols on Barrier Properties and Degradation.
Biomacromolecules
December 2023
Key Laboratory of Bio-based Polymeric Materials Technology and Application of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, People's Republic of China.
Article Synopsis
- The study focuses on creating biobased polyesters using a new aromatic diacid, 2,5-thiophenedicarboxylic acid (TDCA), leading to the formation of copolyesters with adjustable properties and improved biodegradability.
- The novel polyesters, known as PAATh copolyesters, showcase high thermal stability, excellent tensile strength, and superior gas barrier performance compared to conventional biodegradable polyesters.
- The research explores the enzymatic degradation of these materials through experiments and molecular dynamics simulations, revealing key insights into their structure-property relationships and potential as substitutes for existing biodegradable plastics.
Enzymatically catalyzed furan-based copolyesters containing dilinoleic diol as a building block.
RSC Adv
July 2023
West Pomeranian University of Technology, Szczecin, Faculty of Chemical Technology and Engineering, Department of Polymer and Biomaterials Science Al. Piastow 45 71-311 Szczecin Poland
A more environmentally friendly method for creating sustainable alternatives to traditional aromatic-aliphatic polyesters is a valuable step towards resource-efficiency optimization. A library of furan-based block copolymers was synthesized temperature-varied two-step polycondensation reaction in diphenyl ether using lipase B (CAL-B) as a biocatalyst where dimethyl 2,5-furandicarboxylate (DMFDCA), α,ω-aliphatic linear diols (α,ω-ALD), and bio-based dilinoleic diol (DLD) were used as the starting materials. Nuclear magnetic spectroscopy (H and C NMR), Fourier transform spectroscopy (FTIR) and size exclusion chromatography (SEC) were used to analyze the resulting copolymers.
View Article and Find Full Text PDFNew Random Aromatic/Aliphatic Copolymers of 2,5-Furandicarboxylic and Camphoric Acids with Tunable Mechanical Properties and Exceptional Gas Barrier Capability for Sustainable Mono-Layered Food Packaging.
Molecules
May 2023
Department of Civil, Chemical, Environmental, and Materials Engineering, University of Bologna, 40138 Bologna, Italy.
High molecular weight, fully biobased random copolymers of 2,5-furandicarboxylic acid (2,5-FDCA) containing different amounts of (1R, 3S)-(+)-Camphoric Acid (CA) have been successfully synthesized by two-stage melt polycondensation and compression molding in the form of films. The synthesized copolyesters have been first subjected to molecular characterization by nuclear magnetic resonance spectroscopy and gel-permeation chromatography. Afterward, the samples have been characterized from a thermal and structural point of view by means of differential scanning calorimetry, thermogravimetric analysis, and wide-angle X-ray scattering, respectively.
View Article and Find Full Text PDFSynergistic biodegradation of aromatic-aliphatic copolyester plastic by a marine microbial consortium.
Nat Commun
November 2020
Junior Research Group Microbial Biotechnology, Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffenstraße 7B, 38124, Braunschweig, Germany.
Article Synopsis
- The study investigates how marine microorganisms break down synthetic polymers, highlighting that this process is less understood than plastic degradation in soil and compost.
- Using advanced techniques like metagenomics and metaproteomics, researchers found that a marine microbial culture can convert a specific type of plastic into carbon dioxide and biomass in about 15 days.
- They identified key enzymes in the microbial community that are involved in the degradation process, revealing that while many genes and organisms are present, only a few are actively engaged in breaking down the plastics.
Sequence-Selective Terpolymerization from Monomer Mixtures Using a Simple Organocatalyst.
ACS Macro Lett
December 2018
Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, People's Republic of China.
One-step synthesis of block copolymer from mixed monomers is of great interest and challenge. Using a simple non-nucleophilic organobase as the catalyst, we have achieved sequence-selective terpolymerization from a mixture of phthalic anhydride (PA), an epoxide, and -lactide (LA). Alcohol-initiated alternating copolymerization of PA and epoxide occurs first and exclusively because PA is substantially more active than LA for reacting with base-activated hydroxyl.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!