Terephthalate Copolyesters Based on 2,3-Butanediol and Ethylene Glycol and Their Properties.

ABSTRACT: This study explores the synthesis and performance of novel copolyesters containing 2,3-butanediol (2,3-BDO) as a biobased secondary diol. This presents an opportunity for improving their thermal properties and reducing crystallinity, while also being more sustainable. It is, however, a challenge to synthesize copolyesters of sufficient molecular weight that also have high 2,3-BDO content, due to the reduced reactivity of secondary diols compared to primary diols. Terephthalate-based polyesters were synthesized in combination with different ratios of 2,3-BDO and ethylene glycol (EG). With a 2,3-BDO to EG ratio of 28:72, an M_n of 31.5 kDa was reached with a T_g of 88 °C. The M_n dropped with increasing 2,3-BDO content to 18.1 kDa for a 2,3-BDO to EG ratio of 78

SUBMITTER: Blom M 

PROVIDER: S-EPMC11314993 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature