Indexed by:
Journal Papers
First Author:
Liu, Jie
Correspondence Author:
Lu, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
Co-author:
Ren, Weimin,Lu, Xiaobing
Date of Publication:
2015-06-01
Journal:
SCIENCE CHINA-CHEMISTRY
Included Journals:
SCIE、EI、CSCD、Scopus
Document Type:
J
Volume:
58
Issue:
6
Page Number:
999-1004
ISSN No.:
1674-7291
Key Words:
carbon dioxide; polycarbonate; terpolymerization; brush polymer;
degradability
Abstract:
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.
Translation or Not:
no
