^(13)C-NMR STUDY OF ETHYLENE-1-OCTENE COPOLYMERS  

作　　者：徐志康 封麟先 杨士林 

机构地区：[1]Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027

出　　处：《Chinese Journal of Polymer Science》1994年第3期193-200,共8页高分子科学（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China

摘　　要：A ^(13)C-NMR method is presented for a quantitative determination of the respective monomercomposition and sequence distributions in ethylene-1-octene copolymers prepared with supportedtitanium/magnesium catalyst. On the basis of the sequence distributions, the ethylene-1-octenecopolymerization mechanism was studied. It was found that the observed sequence distributions inethylene-1-octene copolymers are satisfactorily predicted by the two-site model M/M,in whichthe copolymerization proceeds according to first-order Markovian statistics at the two differentsites.A ^(13)C-NMR method is presented for a quantitative determination of the respective monomercomposition and sequence distributions in ethylene-1-octene copolymers prepared with supportedtitanium/magnesium catalyst. On the basis of the sequence distributions, the ethylene-1-octenecopolymerization mechanism was studied. It was found that the observed sequence distributions inethylene-1-octene copolymers are satisfactorily predicted by the two-site model M/M,in whichthe copolymerization proceeds according to first-order Markovian statistics at the two differentsites.

关 键 词：Ethylene-1-Octene copolymer Sequence distribution ^(13)C NMR 

分 类 号：O631[理学—高分子化学]