摘要
通过阳离子单体：二甲基二烯丙基氯化铵（ＤＭ）、三甲基烯丙基氯化铵（ＴＭ），分别与丙烯酰胺（ＡＭ），用Ｎａ２Ｓ２Ｏ８－Ｎａ２ＳＯ３引发剂引发，在水溶液中不同单体摩尔比条件下的自由基共聚合，分别用直线交点法、Ｆｉｎｅｍａｎ－Ｒｏｓｓ法和Ｍａｙｏ－Ｌｅｗｉｓ积分法测定了两种阳离子共聚物ＤＭ－ＡＭ、ＴＭ－ＡＭ共聚反应单体竞聚率。
In this paper, monomer reactivity ratios were determined by the radical copolymerizations of dimethyldiallylammonium chloride (DM) and trimethylallylammonium chloride (TM) respectively to acrylamide (AM) in aqueous solution with sodium persulfate and sodium sulphite initiator at varying monomer molar ratio, and by determinations of cationic degree ( CD ) that represents DM AM and TM AM copolymer composition and copolymer weight, and by cotrol of conversion. Determination of r 1 and r 2 for copolymerization of DM(M 1) AM(M 2) and TM(M 1) AM(M 2) respectively use methods of point of intersection and Fine Ross for coversion below 7.25% to DM AM and below 5.04% to TM AM and integral method of Mayo Lewis for coversion above 17.10% based on copolymerization equation. Monomer reactivity ratio r 1, r 2 for DM AM and TM AM are respectively, 0.39±0.06, 4.6±0.3 and 0.050±0.024, 11.3±0.3 by the method of point of intersection, 0.38, 4.6 and 0.075, 11.6 by the Fineman Ross method, and 0.32±0.04, 4.9±0.2 and 0.102±0.016, 10.8±0.4 by the Mayo Lewis method.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
1997年第5期26-30,共5页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目
关键词
阳离子聚合物
竞聚率
共聚合
自由基
聚合反应
cationic polymer, copoly(dimethylallyammonium chloride acrylamide), copoly(trimethylallylammonium chloride acrylamide), monomer reactivity ratio, determination
