摘要
采用正丁基锂引发反应制备了丁苯负离子共聚物。氧及二氧化碳对活性聚合液的作用、单体与残留聚合液活性链接触、极性添加剂以及聚合温度等，均是形成高于设计相对分子质量的大分子结构分布峰的重要原因，抑制这些因素，可合成出Ｍｗ／Ｍｎ小于１．１的窄分布丁苯共聚物，经ＧＰＣ测定，观察不出大分子峰。
In the copolymer prepared by copolymerization of butadiene and styrene initiated by butyl lithium,the formation of macromolecular peak was mainly affected by the reaction between living polymer solution and oxygen as well as carbon dioxide,the contact of monomer and living polymer solution residue, polar modifier,and copolymerization temperature.By controlling the macromolecular peak forming factors mentioned above,the butadiene-styrene copolymer of Mw/Mn less than 1.1 was obtained , and the macromolecular peak could not be found in the GPC chromatograph of the result copolymer.
出处
《合成橡胶工业》
EI
CAS
CSCD
1999年第1期12-15,共4页
China Synthetic Rubber Industry
关键词
丁苯
共聚物
负离子聚合
分子质量分布
大分子峰
styrene-butadiene copolymer
anion polymerization
relative molecular mass distribution
macromolecular peak
synthesis process
