化工进展Issue(2)：479-483,5.DOI:10.16085/j.issn.1000-6613.2015.02.027
乙酰丙酮锆催化乙丙交酯开环共聚的工艺研究
Process research on ring-opening copolymerization of glycolide and lactide by zirconium (Ⅳ) acetylacetonate
姜诚 1崔爱军 1姜海建 1孙政 1陈群1
作者信息
- 1. 常州大学江苏省精细石油化工重点实验室，江苏常州 213164
- 折叠
摘要
Abstract
Poly(glycolide-co-lactide) (PLGA) with a range of molecular weight was synthesizedvia a new method of copolymerization of glycolide with L-lactide by using zirconium(Ⅳ) acetylacetonate [Zr(Acac)4] as initiator. The properties and structure of PLGA were characterized by NMR spectroscopy,differential scanning calormetry (DSC),thermogravimetric analysis (TGA) and X-ray diffraction (XRD). The crystallinity of copolymers obtained was higher than that formed in the presence of traditional catalyst Sn(Oct)2. The effects of catalyst dosage,polymerization temperature and time were investigated. The optimal condition was as follows:zirconium(Ⅳ) acetylacetonate 0.06%,polymerization temperature 150℃,polymerization time 6h. Intrinsic viscosity of PLGA could reach 0.957dL/g and average molecular weight could reach 1.24×105.关键词
乙酰丙酮锆/乙交酯/L-丙交酯/聚乙丙交酯/开环共聚Key words
zirconium(Ⅳ) acetylacetonate/glycolide/L-lactide/poly(glycolide-co-lactide)/ring-opening copolymerization分类
化学化工引用本文复制引用
姜诚,崔爱军,姜海建,孙政,陈群..乙酰丙酮锆催化乙丙交酯开环共聚的工艺研究[J].化工进展,2015,(2):479-483,5.
