How the aliphatic glycol chain length determines the pseudoeutectic composition in biodegradable isodimorphic poly(alkylene succinate-ran-caprolactone) random copolyesters

We synthesize four series of novel biodegradable poly(alkylene succinate-ran-caprolactone) random copolyesters using a two-step ring-opening/transesterification and polycondensation process with e-caprolactone (PCL) as a common comonomer. The second comonomers are succinic acid derivatives, with var...

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Detalles Bibliográficos
Autores: Safari, Maryam, Torres, Juan, Pérez-Camargo, Ricardo, Martínez de Ilarduya Sáez de Asteasu, Domingo Antxon|||0000-0001-8105-2168, Múgica, Agurtzane, Zubitur, Manuela, Sardon Muguruza, Haritz, Liu, Guoming, Wang, Dujin, Müller, Alejandro Jesús
Tipo de recurso: artículo
Fecha de publicación:2024
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/419787
Acceso en línea:https://hdl.handle.net/2117/419787
https://dx.doi.org/10.1021/acs.biomac.4c01073
Access Level:acceso abierto
Palabra clave:Aliphatic copolyesters
Random copolyesters
Crystallization
Pseudoeutectic point
Àrees temàtiques de la UPC::Enginyeria química
Descripción
Sumario:We synthesize four series of novel biodegradable poly(alkylene succinate-ran-caprolactone) random copolyesters using a two-step ring-opening/transesterification and polycondensation process with e-caprolactone (PCL) as a common comonomer. The second comonomers are succinic acid derivatives, with variations in the number of methylene groups (nCH2) in the glycol segment, nCH2 = 2, 4, 8, and 12. The obtained copolyesters were poly(ethylene succinate-ran-PCL) (ESxCLy), poly(butylene succinate-ran-PCL) (BSxCLy), poly(octamethylene succinate-ran-PCL) (OSxCLy), and poly(dodecylene succinate-ran-PCL) (DSxCLy). We discovered a new mixed isodimorphic/comonomer exclusion crystallization in ESxCLy copolymers. The BSxCLy, OSxCLy, and DSxCLy copolymers display isodimorphic behavior. Our findings revealed a significant variation in the pseudoeutectic point position, from mixed isodimorphism/comonomer exclusion crystallization to isodimorphism with pseudoeutectic point variation from 54% to up to 90%. Moreover, we established a link between the melting temperature depression slope variation and the comonomer inclusion/exclusion balance, providing valuable insights into the complex topic of isodimorphic random copolymers.

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