文献类型：期刊文献

中文题名：丁苯嵌段共聚物的偶联反应研究

英文题名：Coupling reaction of styrene-butadiene block copolymer

作者：刘峰[1,2];应圣康[1,2];刘青[1,2]

机构：[1]华东理工大学活性聚合研究室;[2]北京燕山石油化工公司研究院

年份：1998

卷号：21

期号：2

起止页码：92

中文期刊名：合成橡胶工业

外文期刊名：China Synthetic Rubber Industry

收录：CSTPCD;;EI(收录号：1998334259339);Scopus;CSCD:【CSCD_E2011_2012】；

语种：中文

中文关键词：丁苯;嵌段共聚物;偶联剂;丁苯橡胶;SBS;聚合

外文关键词：styrene-butadiene block copolymer;phenyl benzoate;coupling agent;coupling reaction

摘要：以正丁基锂为引发剂、环己烷为溶剂、四氢呋喃为活性添加剂和结构调节剂，研究了用苯甲酸苯酯为偶联剂合成ＳＢＳ的规律。结果表明，用苯甲酸苯酯作偶联剂，其偶联效率（ＣＥ）可达９６％以上；偶联反应最快在３０ｓ内完成；偶联反应温度、ＳＢ段相对分子质量和聚合物溶液浓度对偶联反应无明显影响；当四氢呋喃／正丁基锂（ＴＨＦ／Ｌｉ）（摩尔比，下同）值不大于０．５时，ＣＥ与苯甲酸苯酯偶联剂／正丁基锂（ＢｚＯＰｈ／Ｌｉ，摩尔比）值无关；当ＴＨＦ／Ｌｉ大于０．５时，ＣＥ随ＢｚＯＰｈ／Ｌｉ值的增大而减小；当ＢｚＯＰｈ／Ｌｉ为０．５时，ＴＨＦ／Ｌｉ值的增大对ＣＥ无明显影响。
he coupling reaction of styrene-butadiene two block copolymers by the coupling agent phenyl benzoate(BzOPh)was studied with n-BuLi as initiator ,cyclohexane as solvent and tetrahydrofuran(THF)as activator as well as structure regulator.The results showed that the coupling efficiency(CE) reached 96%by the coupling agent BzOPh in 30 s.When the molar ratio of THF/Li was less than or equal to 0.5,BzOPh/Li was in 0.5～1.0 at 20～80 ℃,Mn SB was 5×104～8×104 and polymer solution concentration was 0.1～0.2 g/mL.When BzOPh was 0.5,THF/Li was 0～10,CE reached 93%.When THF/Li was more than 0.5,BzOPh/Li more than 0.5,CE gradually decreased with the increase of BzOPh/Li.