摘要
锰(Ⅲ)离子可以引发烯类单体自由基聚合。羧酸,α-羟基羧酸对丙烯酰胺聚合有促进作用,其活性顺序为羟基多元羧酸(柠檬酸)>羟基羧酸(乳酸)>羧酸(正丁酸)。测定了在较高酸性([H^+]=3.0M)的硫酸水溶液中,单独Mn^(3+),Nn^(3+)-乙醇酸,Mn^(3+)-乳酸引发丙烯酰胺聚合的活化能与动力学方程。
Manganese (HI) acetate can be used as an initiator for vinyl radical polymerization. The presence of carboxylic acid will promote the polymerization of acrylamide and enhance the rate of polymerization. The order of promoting reactivity of acid is a-hydroxy polycarboxylic acid (citric acid) >a-hyroxy carboxylic acis (lactic acid) >a-amino acid (glycine) > carboxylic'acid (n-butyric acid). The effect of concentration of sulfuric acid on the rate of acrylamide polymerization in the aqueous solution has been studied. The overall activation energy of polymerization and the kinetics of polymerization of acrylamide initiated with Mn3+, Mn3+-glycolic acid, Mn3+-lactic acid systems were determined respectively.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1989年第5期593-599,共7页
Acta Polymerica Sinica
基金
国家自然科学基金资助课题
关键词
丙烯酰胺
自由基聚合
锰
羧酸
Acrylamide radical polymerization
Manganese (III) acetate
Mn3+-car-boxylic or a-hydroxy carboxylic acid initiation systems
