线型及星形端羟基聚丁二烯的合成与表征  

Synthesis and characterization of linear and star-shaped hydroxyl-terminated polybutadienes

作　　者：易建军[1] 李勇[1] 陈继明[1] 齐永新[1] 鲁在君[2] 潘广勤[1] 柏海见[1] 于晶[1] 

机构地区：[1]中国石油兰州石化公司研究院,兰州730060 [2]山东大学化学与化工学院,济南250100

出　　处：《合成橡胶工业》2015年第2期84-89,共6页China Synthetic Rubber Industry

摘　　要：以叔丁基二甲基硅氧基丙基锂为引发剂,丁二烯为单体,环己烷为溶剂,甲基三氯硅烷为偶联剂,采用活性负离子聚合法合成了线型端羟基聚丁二烯(L-HTPB)和星形端羟基聚丁二烯(S-HTPB),并用凝胶渗透色谱和核磁共振氢谱对其结构进行了表征。结果表明,采用该方法合成的2种聚丁二烯,其1,4-结构摩尔分数均接近90.00%,L-HTPB的平均官能度接近2.00,S-HTPB的平均官能度接近3.00,与分子设计值基本相符。Linear and star-shaped hydroxyl-terminated polybutadienes（ L-HTPB and S-HTPB） were synthesized by living anionic polymerization of butadiene,using tert-butyldimethylsilyloxy propyllithium as initiator,cyclohexane as solvent and methyltrichlorosilane as coupling agent.The polymers were characterized by gel permeation chromatography and1H-nuclear magnetic resonance.The results showed that the mole fraction of 1,4-unit of synthesized polybutadienes both closed to 90.00%.The average functionalities of LHTPB and S-HTPB approached to 2.00 and 3.00 respectively which were fit for design values.

关 键 词：线型端羟基聚丁二烯 星形端羟基聚丁二烯 活性负离子聚合法 新型硅-锂引发剂 平均官能度 微观结构 

分 类 号：O632.14[理学—高分子化学]