文献类型：期刊文献

中文题名：苯乙烯／丁二烯的阴离子反应挤出聚合机理

英文题名：Anionic Reactive Mechanism of Styrene/Butadiene Copolymer Synthesized by Reactive Extrusion

作者：孙刚[1];周颖坚[1];张锴[1];胡福增[1];郑安呐[1]

机构：[1]华东理工大学材料科学与工程学院反应挤出研究室,超细材料制备与应用教育部重点实验室,上海200237

年份：2008

卷号：24

期号：11

起止页码：141

中文期刊名：高分子材料科学与工程

外文期刊名：Polymer Materials Science & Engineering

收录：CSTPCD;;EI(收录号：20090111820984);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金重大资助项目(50290090)

语种：中文

中文关键词：反应挤出;苯乙烯;丁二烯;反应机理

外文关键词：reactive extrusion; styrene; butadiene; mechanism

摘要：在双螺杆挤出机中以有机锂为引发剂,采用丁二烯(B)与苯乙烯(S)混合单体,本体一步合成了苯乙烯/丁二烯(S/B)共聚物。采用差示-紫外联用的双检测GPC对共聚物的组成分布进行了研究,结果表明,相比高分子量的共聚物,低分子量共聚物的组成分布比较均一。采用小角激光光散射仪(MALLS)联用GPC对降解后样品进行测试表明,共聚物分子链是由一个聚苯乙烯长嵌段连接着大量的(S-B)小嵌段构成的。
By means of the twin-screw extruder as the reactor and the mixer of styrene （S） and butadiene （B） as the monomer, a novel copolymer （S/B） was synthesized by bulk polymerization with the organic lithium initiator. The copolymer was analyzed by GPC equipped with IR and UV dual detectors, and it could be concluded that, the composition distribution of sample with low molecular weight is more unique, compared with that of sample with high molecular weight. The segments of polystyrene after oxidization was characterized by GPC cooperating with the Multi-angle Laser Light Scattering Instrument（MALLS）. It is proved that the molecule of the copolymers is made of a long polystyrene block linking with tens of S-B blocks.