摘要
本文对铈离子与苯基氨基甲酸酯类化合物在H_2O-CH_3CN(3∶1,V/V)及H_2O-HCONH_2(1∶2,V/V)两种介质中引发丙烯酰胺的聚合进行了研究。考察了不同结构的苯基氨基甲酸酯对聚合的影响。苯基氨基甲酸酯类化合物对铈离子引发聚合均有促进作用,其中对-甲苯基氨基甲酸酯的促进作用最为显著。测定了聚合反应表现活化能及聚合动力学方程,并提出了聚合反应机理。
The Kinetics of polymerization of acrylamide (AAM) initiated by eerie ion-alkyl phenylcarbamate and eerie ion-alkyl 4-methylphenylcarbamate redox systems in the temperature rang of 20-40℃ has been investigated. It was found that eeric ion coupled with alkyl 4-methylphenylcarbamate was a very effective initiating system for the polymerization of AAM. The overall activation energy of polymerization and the rate equations of polymerization were determined. A initiation mechanism involving the formation of a complex between Ce4+ and alkyl phenylcarbamate whose decomposition yields the initiating free radical has been suggested.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1990年第2期213-220,共8页
Acta Polymerica Sinica
基金
国家自然科学基金
关键词
丙烯酰胺
聚合
铈离子
氨基甲酸酯
Acrylamide, Redox initiation system, Ceric ion, Alkyl phenylcarbamate, Rate equation of polymerization, Overall activation energy of polymerization
