摘要
用GPC仪测定了不同聚合温度时的BR的分子量及其分布。结果发现,在一定范围内,聚合温度与 BR的分子量及其分散指数呈线性关系;大于 90℃时,支化反应是影响分子量及其分布的主要原因。
The molecular weight and molecular weight distribution of polybutadiene rubber ( BR ) produced at different polymerization temperatures were determined by GPC method.It was found that Mn, Mη,Mw, [η]and D of BR were in linear relation to polymerization temperature in the range of 65℃ to t2( ℃) , and when the temperature> 90℃C, the branching reaction would be the main cause that influenced the molecular weight and its distribution.
出处
《合成橡胶工业》
CAS
CSCD
北大核心
1989年第2期134-135,共2页
China Synthetic Rubber Industry
关键词
顺丁橡胶
分子量
聚合温度
polybutadiene rubber
molecular weight
branching reaction
