【作者】 杨燕； 陈义旺； 贺晓慧； 苏吉英； 朱祥军；

【Author】 Yan Yang, Yiwang Chen, Xiaohui He, Jiying Su, Xiangjun Zhu (Institute of Polymer Materials, Nanchang University, Nanchang 330031)

【机构】 南昌大学材料科学与工程学院高分子研究所；

【摘要】 <正>生物降解性聚酯是指在特定微生物作用下,或在人体或动物的体内环境下,其化学结构发生变化,导致相对分子量下降及性能变化的高分子化合物。随着人们对维护自身健康及周围生存环境的日益重视,生物医用材料和环境友好材料得到了迅猛的发展,而生物降解性聚酯在这两方面均显示了优秀的性能。脂肪族聚酯由于熔点低,力学性能差,难以满足实际应更多还原

【Abstract】 To obtain a biodegradable polymer material with satisfactory thermal properties, higher elongation and modulus of elasticity, a new copolyester, poly(hexylene terephthalate-co-lactide) (PHTL), was synthesized via direct polycondensation from terephthaloyl dichloride, 1,6-hexanediol, and oligolactide. By using the relative integral areas of the dyad peaks in 1H NMR spectrum of copolyesters PHTL, the sequence lengths of the hexylene terephthalate and lactide units in the resultant copolyesters are 3.5 and 1.5, respectively. The degradation test of copolyesters under a physiological conditions shows that the degradability of PHTL is as a function of content of lactide.更多还原