摘要
用拟合粘度曲线法研究了顺丁橡胶的支化参数,得到了支化临界分子量M,进而计算出支化度λ。其结果用标准参考物SRM 146的测定结果验证,表明方法是可靠的;而λ值与用Drott法的结果相比。后者平均偏高百分之几。
The long chain branching and critical molecular weight (M*) of cis - polybutadienes were measured with a gel permeation chromatograph and intrinsic viscosity data . The correlation between the molecular weight of linear and branched mole cules for a certain fraction in GPC chromatogram was established . So in this method using trialand error by computer and graphic methods, the degree of branching and M*of cis - polybutadienes could be obtained simultaneously, and other parameters of branching were also obtained .
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1992年第6期359-360,共2页
China Synthetic Rubber Industry
基金
中国石油化工总公司合成橡胶技术开发中心资助项目
关键词
支化
顺丁橡胶
橡胶
高聚物
cis-l,4-polybutadiene
branching parameter
branching critical molecular weight
branching degree
