γ-辐照乙烯-辛烯共聚物的固体核磁^(13)C谱研究  

SOLID STATE ^(13)C-NMR STUDY OF γ-IRRADIATED POE

作　　者：何涛[1] 贾少晋[1] 江平开[1] 陈燕[1] 

机构地区：[1]上海交通大学化学化工学院上海市电气绝缘与热老化重点实验室,上海200240

出　　处：《高分子学报》2006年第4期624-626,共3页Acta Polymerica Sinica

摘　　要：Ethylene-octene copolymer (POE) samples exposed to γ-radiation under a series doses were investigated using solid state ~ 13 C-NMR.The chemical shifts of POE were assigned, and the peak evolution as a function of radiation dose was discussed.An obviously chain scission was found near the branch carbons, and the ~ 13 C-NMR spectra of the corresponding gels confirmed the result.Linewidths of irradiated POE samples of various absorbed doses were observed to which were related to the molecular mobility of the radiation-crosslinked polymer.Ethylene-oetene eopolymer （POE） samples exposed to γ-radiation under a series doses were investigated using solid state ^13C-NMR. The chemical shifts of POE were assigned, and the peak evolution as a function of radiation dose was discussed. An obviously chain seission was found near the branch carbons, and the ^13C-NMR spectra of the corresponding gels confirmed the result. Linewidths of irradiated POE samples of various absorbed doses were observed to which were related to the molecular mobility of the radiation-erosslinked polymer.

关 键 词：Γ辐射 乙烯-辛烯共聚物 固体核磁^13C谱 降解 

分 类 号：O631.3[理学—高分子化学]