聚乙交酯-丙交酯-己内酯三元无规共聚物及其电纺膜的制备与表征

摘要

以左旋丙交酯、乙交酯和己内酯为原料，辛酸亚锡为催化剂，在真空条件下经本体熔融开环聚合，制备了三元无规共聚物（ P），其结构和性能经1 H NMR， IR， DSC和粘度表征。实验结果表明：P的玻璃化转变温度可通过单体的投料比调控；采用静电纺丝法可方便地获得共聚物亚微米纤维膜。%Random terpolymers ( P) of L-lactide, glycolide and caprolactone had been prepared by bulk ring-opening copolymerization initiated by stannous octoate under high vacuum.The structures and properties had been investigated by 1 H NMR, IR, DSC and viscosimetry.The results indicated that the glass transition temperature of P can be controlled by adjusting the monomer ration.The sub-micron fiber membrane of P can be obtained easily through electrospinning.