生物医学工程研究2013，Vol.32Issue(2)：101-104,4.
LLA/GA/ε-CL摩尔比对三元共聚物性能的影响
Effects of Mole Ratios of L-Lactide/Glycolide/ε-Caprolactone on the Properties of the Terpolymers
刘阳 1陈伟利 2赵瑾 1王勤 1王传栋1
作者信息
- 1. 山东省医疗器械研究所,山东省医用高分子材料重点实验室,山东济南 250100
- 2. 山东轻工业学院,山东济南 250353
- 折叠
摘要
Abstract
Poly(L-lactide-co-glycolide-co-ε-caprolactone) with various L-lactide/glycolide/ε-caprolactone (LLA/ GA/CL) mole ratios was prepared by ring-opening polymerization in bulk using stannous octoate as a catalyst.The influence of mole ratios of LLA/GA/CL on the molecular weight,molecular weight distribution,thermal property and crystallinity of the terpolymers were researched by GPC,1 H-NMR,DSC and XRD.The results show that the terpolymer compositions are in agreement with mole ratios of LLA/GA/CL feed.Glass transition temperature (Tg) of terpolymers increases with LLA content increasing but decreases with CL content increasing.When the mole content of LLA increases to 77 percent,namely the mole ratio of LLA/GA is 85 to 15,the terpolymer exhibits obvious crystallinity.关键词
聚(L-丙交酯-co-乙交酯-co-ε-己内酯)/L-丙交酯/乙交酯/ε-己内酯/三元共聚物/摩尔比/热性能/结晶性Key words
Poly(L-lactide-co-glycolide-co-ε-caprolactone)/L-Lactide/glycolide/ε-caprolactone/Terpolymer/Mole ratio/Thermal property/Crystallinity分类
医药卫生引用本文复制引用
刘阳,陈伟利,赵瑾,王勤,王传栋..LLA/GA/ε-CL摩尔比对三元共聚物性能的影响[J].生物医学工程研究,2013,32(2):101-104,4.
