Fully degradable brush polymers with polycarbonate backbones and polylactide side chains
发布时间：2019-03-09
点击次数：
- 论文类型：
- 期刊论文
- 发表时间：
- 2015-06-01
- 发表刊物：
- SCIENCE CHINA-CHEMISTRY
- 收录刊物：
- Scopus、CSCD、EI、SCIE
- 文献类型：
- J
- 卷号：
- 58
- 期号：
- 6
- 页面范围：
- 999-1004
- ISSN号：
- 1674-7291
- 关键字：
- carbon dioxide; polycarbonate; terpolymerization; brush polymer; degradability
- 摘要：
- Novel, fully degradable brush polymers with polycarbonate backbones and polylactide side chains were prepared by a three-step reaction that included the terpolymerization of cyclohexene oxide (CHO) and benzyl glycidyl ether (BGE) with CO2, hydrogenation of the resultant terpolymers to afford the terpolymers with 1,2-glycerol carbonate units and the 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) mediated ring-opening polymerization of lactide on the polycarbonate backbone. The brush copolymer bearing polylactide (PLA) chains from racemic lactide (rac-LA) has a single glass-transition temperature of 58.5 A degrees C, whereas the copolymers with (L)-PLA side chains exhibited a melting enthalpy at 135.8 A degrees C with Delta H (m)=25.04 J/g and were further shown by a WAXD study to be a typical semicrystalline polymer with sharp diffraction peaks at 2 theta values of 16.7A degrees and 18.9A degrees.
- 第一作者
- Liu, Jie
- 合写作者
- Ren, Weimin,Lu, Xiaobing
- 通讯作者
- Lu, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.