abstract
In a quest to develop more sustainable polymers, decoupling their production from fuel-based resources and searching for alternative greener synthetic pathways are important priorities. Among the numerous polymers that fall into this category are furan-based polyesters. Besides the origin of polymers, their synthesis is another critical topic to consider regarding the overall greenness of the final product. However, despite several studies focusing on bio-based alternatives, such as poly(alkylene 2,5-furandicarboxylate)s, their synthesis still relies on air- and water-sensitive metal-based catalysts and is typically carried out under harsh conditions. This study explores an alternative approach with the application of eutectic solvents (ES) as catalysts for a more sustainable approach for synthesising furan-based polyesters, specifically poly(ethylene 2,5-furandicarboxylate) (PEF), as well as poly(trimethylene furandicarboxylate) (PTF) and poly(butylene furandicarboxylate) (PBF). Two different ES were evaluated as catalysts; the best results were obtained with urea and zinc acetate ES (U:Zn(OAc)2, 4:1 mol:mol). The resulting polymers were analysed for their structure, molecular weight, and thermal properties.
authors
Beatriz Agostinho, Vinícius de Paula, Armando J. D. Silvestre, Andreia F. Sousa
our authors
Andreia Fernandes de Sousa
Principal Researcher
Armando Jorge Domingues Silvestre
Full professor
Beatriz Agostinho
PhD Student
Vinícius de Paula
PhD Studentacknowledgements
The FCT is acknowledged for the research contract to AFS (CEECINSTLA/00002/2022) and a doctorate grant to BA 2020.04495.BD (DOI 10.54499/2020.04495.BD).