【摘要】 在聚乙二醇(PEG)为相转移催化剂、碱性促进剂存在下,用顺丁烯二酸氢钾(PHM)与环氧化丁苯橡胶进行开环反应,制备了环氧基转化率达100%的含顺丁烯二酸钾的丁苯橡胶离聚体,用傅里叶变换红外光谱及透射电子显微镜进行了表征,并研究了其吸水性、吸油性及稀溶液黏度。结果表明,随着离子含量的增加,离聚体的吸水率和稀溶液黏度增大,吸油率降低。更多还原

【Abstract】 Styrene-butadiene rubber(SBR) is prepared by emulsion polymerization and can be vulcanized to form a chemically crosslinked rubber. Since it is of a nonpolar nature, its modification to form elastomer with polar groups has attracted interest. Ionomer is a kind of polymer containing less than 10% ionic groups and shows characteristic properties due to the presence of ionic domains~ [1] . In this communication the potassium maleated SBR ionomer was made by ring-opening reaction of epoxy groups in the epoxidized SBR~ [2] with potassium hydrogen maleate(PHM). In 2005 it was reported that during the ring-opening reaction of epoxidized styrene-butadiene-styrene triblock copolymer (SBS) with PHM, the best conversion of epoxy group was only 65%~ [3] . However, it was found recently that after adding a basic accelerator (BA) to the ring-opening reaction of epoxidized SBR with PHM, the conversion of epoxy group could reach about 100%.更多还原