2026-04-13T07:32:52Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/3452442026-01-15T06:52:17Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Gabirondo, Elena author Melendez Rodriguez, Beatriz author Arnal, Carmen author Lagaron, Jose Maria author Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon author Sardon, Haritz author Torres Giner, Sergio author 2021-03-14 Monomers obtained from renewable feedstocks have emerged as a sustainable alternative to petroleum derived polymers. One of the biomass derived polyesters that has recently been gaining attention as an alternative to petrochemical polyethylene terephtalate (PET) for food and beverage packaging applications is poly(ethylene furanoate) (PEF). However, similar to PET, PEF is not biodegradable or compostable and its end-of-life options must be thus considered to avoid contributing to the accumulation of plastic waste. In this manuscript, PEF films were first produced using thermo-compression, an industrially relevant processing method, and their thermal, mechanical, and barrier properties were determined and compared to those of PET and other biopolyesters to ascertain their suitability for food packaging. Thereafter, the chemical glycolysis of PEF film waste was investigated using a sustainable and thermally stable acid–base organocatalyst. After succesfully deconstructing PEF into bis(2-hydroxyethyl)-furan-2,5- dicarboxylate (BHEF), the obtained BHEF diester was used to resynthesize PEF using the same catalyst to generate a new biopolyester with similar thermal properties to the virgin one in a closed-loop cycle. Peer Reviewed Objectius de Desenvolupament Sostenible::12 - Producció i Consum Responsables Objectius de Desenvolupament Sostenible::12 - Producció i Consum Responsables::12.4 - Per a 2020, aconseguir la gestió ecològicament racional dels productes químics i de tots els residus al llarg del seu cicle de vida, de conformitat amb els marcs internacionals convinguts, i reduir-ne de manera significativa l’alliberament a l’atmosfera, a l’aigua i al sòl a fi de minimitzar-ne els efectes adversos sobre la salut humana i el medi ambient Objectius de Desenvolupament Sostenible::12 - Producció i Consum Responsables::12.5 - Per a 2030, disminuir de manera substancial la generació de residus mitjançant polítiques de prevenció, reducció, reciclatge i reutilització Postprint (author's final draft) Àrees temàtiques de la UPC::Enginyeria química Monomers Biopolymers Polyesters Poly(ethylene furanoate) PEF Chemical recycling Organic catalyst Monòmers Biopolímers Poliesters Organocatalyzed closed-loop chemical recycling of thermo-compressed films of poly(ethylene furanoate)