Indexed by:
期刊论文
First Author:
Liu, Ye
Correspondence Author:
Liu, Y; Lu, XB (reprint author), Dalian Univ Technol, State Key Lab Fine Chem, Dalian 116024, Peoples R China.
Co-author:
Zhou, Hui,Guo, Jia-Zhi,Ren, Wei-Min,Lu, Xiao-Bing
Date of Publication:
2017-04-18
Journal:
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Included Journals:
SCIE、EI、PubMed
Document Type:
J
Volume:
56
Issue:
17
Page Number:
4862-4866
ISSN No.:
1433-7851
Key Words:
carbon dioxide; depolymerization; polycarbonates; recyclable polymers;
temperature switch
Abstract:
It is of great significance to depolymerize used or waste polymers to recover the starting monomers suitable for repolymerization reactions that reform recycled materials no different from the virgin polymer. Herein, we report a novel recyclable plastic: degradable polycarbonate synthesized by dinuclear chromium-complex-mediated copolymerization of CO2 with 1-benzyloxycarbonyl-3,4-epoxy pyrrolidine, a meso-epoxide. Notably, the novel polycarbonate with more than 99% carbonate linkages could be recycled back into the epoxide monomer in quantitative yield under mild reaction conditions. Remarkably, the copolymerization/ depolymerization processes can be achieved by the ON/OFF reversible temperature switch, and recycled several times without any change in the epoxide monomer and copolymer. These characteristics accord well with the concept of perfectly sustainable polymers.
Translation or Not:
no
