华东理工大学学报（自然科学版）2017，Vol.43Issue(4)：487-494,8.DOI:10.14135/j.cnki.1006-3080.2017.04.006
PCL-PEG-PCL/PLA共混材料的制备与性能分析
Preparation and Property Analysis of Poly(ε-caprolactone)-Poly(ethylene glycol)-Poly(ε-caprolactone)/Polylactide Blends
温广文 1夏浙安 1陈建定1
作者信息
- 1. 华东理工大学材料科学与工程学院,上海 200237
- 折叠
摘要
Abstract
To broaden the application of polylactide(PLA) in biomedical field,initiator PEG-2000 modified by titanium isopropoxide was introduced to the ring opening polymerization of caprolactone.A biodegradable triblock poly(ε-caprolactone)-poly(ethylene glycol)-poly(ε-caprolactone) (PCEC) was synthesized.The morphology,crystallization and tensile properties of PCEC/PLA blends with varied concentration of PCEC were investigated by comparison with PEG-6000/PLA blends.The SEM images show that PCEC/PLA blends exhibit a typical sea-island morphology with PCEC finely dispersed in PLA matrix as droplets.The crystallization ability of PLA in PCEC/PLA blends is weaker than PLA in PEG-6000/PLA.When the mass ratio of additive and PLA is 15∶85,the elongation at break of PEG-6000/PLA blend is 7% higher than PCEC/PLA while the tensile strength is 50% lower.关键词
聚乳酸/共混/微观形貌/结晶/拉伸性能Key words
PLA/blend/morphology/crystallization/tensile properties分类
化学化工引用本文复制引用
温广文,夏浙安,陈建定..PCL-PEG-PCL/PLA共混材料的制备与性能分析[J].华东理工大学学报（自然科学版）,2017,43(4):487-494,8.
