Novel semi-aromatic polyesters based on the biobased diol 2,2′-((3,3a,6,6a)-hexahydrofuro[3,2-]furan-3,6-diyl)bis(ethan-1-ol): synthesis, characterization and properties

Herein, we provide details of the synthesis and characterization of a novel 2-carbon-extended diol derived from isomannide, 2,2′-((3 S ,3a R ,6 S ,6a R )-hexahydrofuro[3,2- b ]furan-3,6-diyl)bis(ethan-1-ol) and the corresponding semi-aromatic copolyester (PIeT) based on it and dimethyl terephthalate. This new polyester (PIeT) has a weight-average molecular weight of about 40 000 g mol −1 . The NMR analysis showed that the isohexide unit was retained under applied conditions. DSC and WAXD analyses demonstrated that the polyester is semicrystalline. Herein, we provide the synthesis and characterization of a novel 2-carbon-extended diol derived from isohexide and the corresponding semi-aromatic copolyester (PIeT) based on it.