Turning waste into resources. Efficient synthesis of biopolyurethanes from used cooking oils and CO2

Autor: Francisca Werlinger, María P. Caballero, Oleksandra S. Trofymchuk, Mario E. Flores, Ignacio Moreno-Villoslada, Felipe de la Cruz-Martínez, José Antonio Castro-Osma, Juan Tejeda, Javier Martínez, Agustín Lara-Sánchez
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of CO2 Utilization, Vol 79, Iss , Pp 102659- (2024)
Druh dokumentu: article
ISSN: 2212-9839
DOI: 10.1016/j.jcou.2023.102659
Popis: The coupling reaction of carbon dioxide and highly-substituted epoxides derived from renewable resources such as fatty acids and waste vegetable oils (cooking oils derived from olive and sunflower) leads to the synthesis of new bio-derived cyclic carbonates using efficient metal-free bifunctional organocatalysts under mild and solvent-free reaction conditions. Once cyclic carbonates derived from biobased sources were synthesized, the design of non-isocyanate polyurethanes (NIPUs) with different chemical structures was investigated by their reaction with a broad substrate scope of diamines. The NIPUs materials were characterized by spectroscopic techniques (NMR and IR) and their molecular weights and polydispersities were determined by GPC studies. Finally, thermal properties of the polymers were studied by DSC and TGA analyses.
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