α,α'-邻苯二甲基桥联环戊二烯基二价钐配合物催化丙烯腈聚合  

Polymerization of Acrylonitrile Catalyzed by α,α'-o-Xylene Bridged Cyclopentadienyl Lanthanide(II) Complex(C5H4CH2C6H4CH2C5H4)Sm(THF)

作　　者：贾惠芳[1] 齐民华[1] 袁小亮[1] 

机构地区：[1]广东石油化工学院,广东茂名525000

出　　处：《广东化工》2011年第7期12-13,共2页Guangdong Chemical Industry

基　　金：广东省自然科学基金资助项目(10152500002000015);江苏高校省级重点实验室开放课题项目(KJS1006)

摘　　要：文章以α,α'-邻苯二甲基桥联环戊二烯基二价钐配合物为催化剂,对丙烯腈聚合反应进行了研究,考察了催化剂用量、反应时间及反应温度对丙烯腈聚合的影响,并且用粘度法对聚合产物的粘均分子量进行了表征。发现α,α'-邻苯二甲基桥联环戊二烯基二价钐配合物对丙烯腈聚合反应具有较高的催化活性。随着催化剂用量增加聚合反应转化率增大,聚合产物的粘均分子量下降;延长反应时间,转化率和分子量都增大。通过13C-NMR对所得聚合物的立构规整性进行了表征,所得聚丙烯腈为无规立构聚合物。The polymerization of acrylonitrile catalyzed by α, α＇-o-xylene bridged cyclopentadienyl lanthanide （II） complex （CsH4CH2C6H4CH2C5H4）Sm（THF） was first studied. It was found that （C5H4CHEC6H4CH2C5H4）Sm（THF） could effectively catalyzed the polymerization of acrylunitrile. The influence of catalyst use level, polymerization temperature and time for the polymerization of acrylonittile was investigated. The conversion of polymerization reaction increased and viscosity-average molecular weight of polyacrylonitrile decreased as catalyst use level increasing. The conversion and viscosity-average molecular weight decreased as temperature increasing. Viscosity-average molecular weight of polyacrylonitrile gained was determined by viscometry. The polymerization system gived atactic PAN.

关 键 词：钐 桥联茂基 丙烯腈 聚合 

分 类 号：TQ325.8[化学工程—合成树脂塑料工业]