阳离子型聚丙烯酰胺乳液的制备  

Preparation of Cationic Polyacrylamide Emulsion

作　　者：吴宗华[1] 陈少平[2] 王春燕[1] 

机构地区：[1]福建师范大学高分子研究所,福建福州350007 [2]福建师范大学化学与材料学院,福建福州350007

出　　处：《中国造纸学报》2005年第2期130-133,共4页Transactions of China Pulp and Paper

基　　金：水利部"948"基金项目(200304);福建省科技厅重点项目(2003H021)

摘　　要：采用无皂乳液聚合法合成了丙烯酰胺单体质量分数(f)为0.40～0.73的丙烯酰胺-苯乙烯共聚物乳液(固含量为40%),并通过Hofmann反应将乳液改性为阳离子型聚丙烯酰胺乳液.f为0.73的共聚物乳液的Hofmnn反应产物中,胶粒的数均直径为85 nm,胺基和羧基的转化率分别为69.5%和6.4%.The copolymers of acrylamide and styrene were prepared by emulsifier-free copolymerization. The mass fraction of acrylamide in the copolymer was 0.40 - 0.73. The emulsion was modified into cationic polymer by Hofmann reaction. The diameter of the microparticles in the emulsion with the mass fraction of 0.73 was 85 nm, conversion fields of amino groups and caxboxyl groups were 69.5% and 6.4%, respectively.

关 键 词：阳离子聚丙烯酰胺乳液 无皂乳液聚合 Hofmann反应 

分 类 号：TS727[轻工技术与工程—制浆造纸工程]