聚合物载体－稀土金属络合物的研究　ⅩⅢ．聚［苯乙烯－甲基丙烯酸β（甲基亚硫酰基）乙酯］的结构与其稀土金属络合物催化丁二烯聚合的活性  

STUDY ON POLYMER SUPPORTED RARE EARTH METAL COMPLEXES ⅩⅢ. STRUCTURE OF POLY[STYRENE-2-(METHYL SULFINYL)ETHYL METHACRYLATE] AND CATALYTIC ACTIVITY OF ITS RARE EARTH METAL COMPLEXES IN BUTADIENE POLYMERIZATION

作　　者：李一贯 李玉良[1] 朱永楷[1] 于广谦[1] 

机构地区：[1]中国科学院长春应用化学研究所

出　　处：《合成橡胶工业》1995年第6期344-346,共3页China Synthetic Rubber Industry

基　　金：国家自然科学基金

摘　　要：从测得的竞聚率计算了单体链节在聚［苯乙烯－甲基丙烯酸β（甲基亚硫酰基）乙酯］（ＰＳＭ）中的序列分布。苯乙烯（Ｓ）或甲基丙烯酸β（甲基亚硫酰基）乙酯（Ｍ）的长序列的概率随着ＰＳＭ中相应单体含量的增加而增加。对于Ｓ和Ｍ摩尔分数大致相等的ＰＳＭ，单体链节的长序列分布函数值相接近。用与此结构相近的ＰＳＭ合成的稀土金属络合物，其催化活性不佳。在Ｍ短序列分布和Ｓ长序列分布较高的情况下，络合物的催化活性最好。所得聚丁二烯的微观结构与ＰＳＭ中单体单元的分布无关。The sequence distribution of monomeric units in poly[styrene-2-(methyl sulfinyl)ethyl methacrylate](PSM) was calculated from the reactivity ratio determined.The probability of long sequences of styrene(S) or 2-(methyl sulfinyl) ethyl methacrylate(M) increased with increasing the content of the considered monomer in PSM.The distribution of long sequences of both monomeric units was near for the PSM containing about equimolecular amounts of S and M.The catalytic activity of the rare earth metal complexes synthesized with the PSM similar to above-named structure was not good.When the distribution of short sequences of M and long sequences of S was higher,the catalytic activity of the complexes was optimum.The microstructure of polybutadiene obtained had nothing to do with the distribution of monomeric units in the PSM.

关 键 词：聚合 聚合物载体 催化剂 稀土配合物 PSM 

分 类 号：O643.36[理学—物理化学] TQ333.2[理学—化学]