Bio-based unsaturated polyester resin from post-consumer PET
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F24%3A39921778" target="_blank" >RIV/00216275:25310/24:39921778 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2024/ra/d3ra08500g" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2024/ra/d3ra08500g</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d3ra08500g" target="_blank" >10.1039/d3ra08500g</a>
Alternative languages
Result language
angličtina
Original language name
Bio-based unsaturated polyester resin from post-consumer PET
Original language description
This study explores the utilization of post-consumer poly(ethylene terephthalate) (PET) as a material in the synthesis of styrene-free unsaturated polyester (UP) resin. The process involves glycolysis of PET waste with diethylene glycol and condensation polymerization with bio-based itaconic acid. The resulting unsaturated polyester possesses reactive methylidene functions that, in contrast to commonly employed fumarates/maleates, facilitate copolymerization with non-styrene reactive diluents. To formulate the resins, methacrylates and itaconates were used for dilution, and the curing process is achieved through a redox initiation system at room temperature, followed by post-curing at elevated temperatures. The cured formulations were characterized by their glass transition temperature, determined by DMA analysis. Mechanical properties were evaluated using standardized tests in tension, flexure, and compression. Particularly promising characteristics are observed in formulations incorporating bio-based dimethyl itaconate (DMI), allowing the formulation of materials with a high ultimate flexural strength (sigma f,max = 161.4 MPa) and compressive yield point (sigma c,yield = 131.3 MPa). Furthermore, the low volatility of DMI addresses the health, safety, and ecological concerns associated with the commonly used styrene. This technology not only presents a promising avenue for sustainable UP resin for glass fiber reinforced composites but also allows upcycling PET waste. Styrene-free unsaturated polyester resin synthesized from post-consumer PET is described.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
RSC Advances
ISSN
2046-2069
e-ISSN
2046-2069
Volume of the periodical
14
Issue of the periodical within the volume
12
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
8536-8547
UT code for WoS article
001183875300001
EID of the result in the Scopus database
2-s2.0-85187651772