【摘要】 <正> 文献上对丙烯酰胺的反相乳液聚合、反应机理和动力学模型的报道较多,有关反相悬浮聚合则报道甚少。Dimonie等考察了引发剂浓度、水相加入的方式等对聚合物分子量的影响。本实验以石油醚为连续相,聚乙烯醇、司班-20及司班-80为分散剂,K₂S₂O₈为引发剂组成反相悬浮聚合体系,所得聚丙烯酰胺呈明显的颗粒状,极易与溶剂分离且转化率高,分子量大。 所用试剂有:丙烯酰胺（CP,天津化学试剂研究所）;过硫酸钾（AR,上海试剂二厂）;聚乙烯更多还原

【Abstract】 The inverse suspension polymerization of acrylamide has been carried out in the presence of emulsifier Span 20 and Span 80, and K₂S₂O₈ as initiator. The polymerization rate R_p was found to be proportional to [M]^0.13 and to [I]^0.11, and the molecular weight of polymer M_w varied with [M]^1.1 and [I]^0.11 respectively. The overall activation energy for polymerization of aerylamide at 40～50℃ was calculeted to be 30. 5 kJ/mol.更多还原