中国塑料2024，Vol.38Issue(11)：14-20,7.DOI:10.19491/j.issn.1001-9278.2024.11.003
环氧基聚硅氧烷调控制备耐水解结晶聚乙交酯的研究
Controllable preparation of hydrolysis-resistant crystalline poly(glycolic acid)using poly(epoxypropoxy)silsesquioxane
闻薇 1公维光 2孟鑫1
作者信息
- 1. 华东理工大学化工学院产品工程系,上海市多相结构材料化学工程重点实验室,上海 200237
- 2. 华东理工大学体育新材料研发中心,上海 200237
- 折叠
摘要
Abstract
Poly(epoxypropoxy)silsesquioxane(PESQ)was designed and synthesized and then melt blended with poly(glycolic acid)(PGA)at loadings of 0.5 wt％,1.0 wt％,2.0 wt％and 4.0 wt％to prepare the hydrolysis-resistant crystalline PGA.The changes in the rheological,hydrolysis,and crystallization properties of the PESQ-modified PGA was investigated to study the effect of PESQ modification on PGA.The results indicated that a combination of PESQ and PGA in a chain expansion form effectively improved the hydrolytic performance of PGA through increasing its viscos-ity,resulting in a reduction in the mass loss by 21.1％after degrading for 10 days.Furthermore,PESQ could facilitate the crystallization of PGA.With an increase in the addition amount of PESQ,the crystallization temperature of the modi-fied PGA increased to 179.5 ℃,which was higher than that of pure PGA by 6.8 ℃.There is a decrease in the initial crystallization activation energy of the modified PGA,indicating that PESQ contributed to heterogenous nucleation.关键词
聚乙交酯/环氧基聚硅氧烷/水解性能/结晶性能Key words
poly(glycolic acid)/poly(epoxypropoxy)silsesquioxane/hydrolytic property/crystallization property分类
化学化工引用本文复制引用
闻薇,公维光,孟鑫..环氧基聚硅氧烷调控制备耐水解结晶聚乙交酯的研究[J].中国塑料,2024,38(11):14-20,7.
