内消旋和外消旋2,3-二氰基-2,3-二苯基丁二酸二乙酯对苯乙烯聚合反应的影响  

Influence of the meso-and dl-Diethyl-2,3-dicyano-23-diphenylsuccinate on Styrene Polymerization

作　　者：金璟[1] 刘捷[1] 黄红军 刘有成[1] 杨第伦 

机构地区：[1]兰州大学化学系应用有机国家重点实验室,兰州730000 [2]中山市应用化学研究所,中山528437

出　　处：《化学学报》1995年第9期929-932,共4页Acta Chimica Sinica

基　　金：国家自然科学基金资助的课题.

摘　　要：测定了题目化合物立体异构体在80℃和90℃引发苯乙烯的自由基聚合反应.在相同条件下,较活泼的meso-体为引发剂时,聚合速率大,产物分子量小;而较稳定的dl-体则聚合速率小,产物分子量大.且在所有反应条件下分子量均随反应时间增长.研究结果认为它们不同的聚合性能主要与异构体热分解速率对聚合动力学的影响有关.That the radical polymerization of Styrene is initiated by meso-and dl-diethyl 2,3-dicyano-2,3-diphenyl succinate at the temperature 80℃ and 90℃ have been determined. Under the same condition, the reactive meso isomer as a initiator, the polymerization rate is faster than dl isomer, but the weight of polystyrene is lower than dl' s. However, the molecular weight of products increase with reaction time in all case. The results indicate that the different polymerization properties of the two isomers for vinyl is related to their thermal stability on the polymerization kinetics.

关 键 词：二氰基 二苯基 丁二酸二乙酯 聚合反应 苯乙烯 

分 类 号：O632.13[理学—高分子化学]