A new biodegradable copolyester poly(butylene succinate-co-ethylene succinate-co-ethylene terephthalate)

作者：Deng LM; Wang YZ^*; Yang KK; Wang XL; Zhou Q; Ding SD

来源：Acta Materialia, 2004, 52(20): 5871-5878.

DOI：10.1016/j.actamat.2004.09.002

• butylene succinate
• ethylene succinate
• ethylene terephthalate
• copolyester
• synthesis
• characterization
• biodegradability

To obtain a biodegradable polymer material with satisfactory thermal properties, higher elongation and modulus of elasticity, a new copolyester, poly(butylene succinate-co-ethylene succinate-co-ethylene terephthalate) (PBEST), was synthesized via direct polycondensation from three prepolymers of butylenes succinate, ethylene succinate and ethylene terephthalate (ET). The resulting copolyesters, PBEST, were characterized by H-1-NMR, DSC, TG and WAXRD, and their melting temperature (T-m), melting heat of fusion (DeltaH(m)), glass-transition temperature (T-g), and thermal decomposition temperature (T-d) (1.5 wt%) were obtained. Compared to poly(butylene succinate-co-ethylene succinate) (PBES), PBEST has improved thermal properties such as higher T-m and T-d due to the incorporation of poly(ethylene terephthalate) unit into the main chains of copolyesters, but very low crystallization speeds. The degradation test of copolyesters in a compost condition shows that the degradability of PBEST is as a function of content of ET.

• 出版日期2004-12-1
• 单位四川大学