Development of Thiophene-Based Copolyesters with a High Gas Barrier and Toughness by the Introduction of Diethylene Glycol
A bio-based poly (butylene thiophenedicarboxylate-co-diethylene glycol) (PBThD) copolyester was synthesized with 2,5-thiophenedicarboxylic acid (TDCA), 1,4-butandiol (BDO), and diethylene glycol (DEG). The free rotation of the ether bond in DEG is used to give the molecular chain good flexibility, and then combined w...