Quinolinyl Imidazolidin-2-imine Nickel Catalyzed Efficient Copolymerization of Norbornene with para-Chlorostyrene  

作　　者：Yan-Qing Li Jian Zhou Ru Xiao Zheng-Guo Cai 

机构地区：[1]State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,College of Material Science and Engineering,Donghua University,Shanghai 201620,China [2]College of Biological and Chemical Engineering,Guangxi University of Science and Technology,Liuzhou 545006,China

出　　处：《Chinese Journal of Polymer Science》2020年第9期941-949,I0005,共10页高分子科学（英文版）

基　　金：the National Natural Science Foundation of China(No.21774018);the Fundamental Research Funds for the Central Universities(No.2232020A-05);the Program for Professor of Special Appointment(Eastern Scholar)at Shanghai Institutions of Higher Learning.

摘　　要：A series of novel quinolinyl imidazolidin-2-imine nickel complexes with different substituents on the imidazolidin-2-imine ligand were synthesized and characterized.The complexes in the presence of methylaluminoxane(MAO)as a cocatalyst catalyzed the copolymerization of norbornene(N)and styrene(S)or para-chlorostyrene(CS)with high activity(up to 1070 kg·mol^-1·h^-1).The installation of sterically bulky substituents on the imidazolidine-2-imine ligand was effective for the increase of the molecular weight and the comonomer content,affording high molecular weight copolymers with tunable CS content(0.57 mol%-11.7 mol%),in which the existence of CI group can provide reaction site for the further functionalization of copolymers as well as the synthesis of graft or cross-linked polymers.The linear relationship between the comonomer content and the glass transition temperature of the copolymers and the monomer reactivity ratios in the copolymerization indicated the formation of the expected functionalized cyclic olefin copolymers(COC).

关 键 词：Imidazolidin-2-imine ligand Nickel complex NORBORNENE para-Chlorostyrene COPOLYMERIZATION 

分 类 号：TQ316.314[化学工程—高聚物工业]