How the Aliphatic Glycol Chain Length Determines the Pseudoeutectic Composition in Biodegradable Isodimorphic poly(alkylene succinate-ran-caprolactone) Random Copolyesters

Maryam Safari*, Juan Torres, Ricardo A. Perez-Camargo, Antxon Martinez de Ilarduya, Agurtzane Mugica, Manuela Zubitur, Haritz Sardon, Guoming Liu, Dujin Wang, Alejandro J. Muller

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

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 ϵ-caprolactone (PCL) as a common comonomer. The second comonomers are succinic acid derivatives, with variations in the number of methylene groups (n CH2) in the glycol segment, n CH2 = 2, 4, 8, and 12. The obtained copolyesters were poly(ethylene succinate-ran-PCL) (ES xCL y), poly(butylene succinate-ran-PCL) (BS xCL y), poly(octamethylene succinate-ran-PCL) (OS xCL y), and poly(dodecylene succinate-ran-PCL) (DS xCL y). We discovered a new mixed isodimorphic/comonomer exclusion crystallization in ES xCL y copolymers. The BS xCL y, OS xCL y, and DS xCL y 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.

Original languageEnglish
Pages (from-to)7392-7409
Number of pages18
JournalBiomacromolecules
Volume25
Issue number11
DOIs
Publication statusPublished - 11 Nov 2024

Keywords

  • GLASS-TRANSITION TEMPERATURE
  • RANDOM COPOLYMERS
  • EPSILON-CAPROLACTONE
  • MECHANICAL-PROPERTIES
  • POLY(ETHYLENE SUCCINATE)
  • CRYSTALLIZATION
  • BEHAVIOR
  • DEGRADATION
  • ISOMORPHISM
  • POLYESTERS

Fingerprint

Dive into the research topics of 'How the Aliphatic Glycol Chain Length Determines the Pseudoeutectic Composition in Biodegradable Isodimorphic poly(alkylene succinate-ran-caprolactone) Random Copolyesters'. Together they form a unique fingerprint.

Cite this