One-pot copolymerization of epoxides/carbon dioxide and lactide using a ternary catalyst system

作     者：Li, Xiang Hu, Chenyang Pang, Xuan Duan, Ranlong Chen, Xuesi 

作者机构：Chinese Acad Sci Changchun Inst Appl Chem Key Lab Polymer Ecomat 5625 Renmin St Changchun 130022 Jilin Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China 

出 版 物：《CATALYSIS SCIENCE & TECHNOLOGY》 (催化科学与技术)

年 卷 期：2018年第8卷第24期

页      面：6452-6457页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：National Natural Science Foundation of China [21574124  51503203  51233004] 

主　　题：incompatibility Retinopathy of Prematurity copolymerization New families PPCS gene biodegradable polymer Ternary lactic acid Catalysts propylene oxide programmable logic arrays Thermal properties 

摘      要：Poly(propylene carbonate) (PPC) and polylactide (PLA), two major types of biodegradable polymers, are produced by the cooperative ring-opening polymerization (coROP) of propylene oxide and CO2 and by the ring-opening polymerization (ROP) of lactide. Because of the incompatibility between coROP and ROP, only simple copolymers of PPC and PLA with up to three blocks have been synthesized. A hybrid of these two polymers would produce a new family of polymers. The new polymers would be regarded as promising biodegradable materials because they would combine the desirable properties of PPC and PLA. Here, we report the synthesis of a PLA/PPC multiblock copolymer using a novel ternary catalytic system that proceeds via an intermolecular chain transfer mechanism. The resultant polymer, which is 100% biodegradable, shows enhanced thermal properties stemming from the incorporation of the PPC units. The broad applicability was further confirmed by extension to other monomers and catalysts.