反应挤出合成S/B嵌段共聚物的研究(英文)  

Synthesis of styrene- butadiene copolymers by reactive extrusion

作　　者：张鹰[1] 烟卫[1] 郑安呐[1] 韩哲文[1] 

机构地区：[1]华东理工大学反应挤出研究室

出　　处：《合成橡胶工业》2001年第6期371-371,共1页China Synthetic Rubber Industry

基　　金：SupportedbyNationalNaturalScienceFoun-dationofChina29974008.

摘　　要：以同向紧啮合双螺杆挤出机为反应器、有机锂为引发剂,采用混合单体加料方式,本体法一步合成了苯乙烯-丁二烯嵌段共聚物。1H-NMR谱图表明该丁苯共聚物的结构以嵌段为主,无规链段为辅。其力学性能则体现出受丁二烯质量分数的影响。The synthesis of styrene-butadiene copolymers (S/B copolymers) by butyllithium initiated bulk polymerization in a twin-screw extruder was discussed. The co-rotating closely intermeshing twin-screw extruder with 35 mm diameter and 40 L/D ratio was used as the reactor. The copolymerization reaction was carried out in the absence of solvents. It was found that the average residence time was between 2 and 3 minutes and the polymeric conversion exceeded 99%. S/B copolymers with 76.3% styrene exhibited the lowest strength and highest elongation at break.

关 键 词：聚合 反应挤出 苯乙烯-丁二烯 嵌段共聚物 合成 S/B嵌段共聚物 本体法 一步合成 

分 类 号：O632[理学—高分子化学]