乳化及引发体系对阳离子苯丙乳液性能的影响  

Effect of the Emulsification and Initiation System on Properties of the Cationic Styrene/acrylate Copolymer Emulsion

作　　者：黄谨[1] 张宏伟[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510641

出　　处：《造纸科学与技术》2011年第6期61-63,97,共4页Paper Science & Technology

基　　金：广东省教育部产学研结合项目(2010090400031)

摘　　要：以苯乙烯(St)、丙烯酸丁酯(BA)、甲基丙烯酸甲酯(MMA)、二甲基二烯丙基氯化铵(DMDAAC)为原料,以N-羟甲基丙烯酰胺(NMA)为功能性单体,采用种子乳液聚合法合成了阳离子苯丙乳液;研究了引发剂种类及用量、乳化剂的种类及配比对阳离子苯丙乳液性能的影响。研究结果表明,使用水溶性偶氮引发剂Y和阴/阳离子复配乳化剂(配比为1∶5)合成的阳离子苯丙乳液性能相对最好;在相同单体配比条件下,合成的乳液不仅固含量高,粒径小,机械稳定性好,而且其成膜吸水率低。The cationic styrene/acrylate copolymer emulsion was prepared by use of styrene（St） ,methyl methacry- late （ MMA ） , butyl acrylate （ BA ）, N-hydroxymethyl acrylamide （NMA） and dimethyldiallylammonium chloride （ DM- DAAC） as co-monomers in a process of seed emulsion polymerization. The effects of kinds and amount of initiators, kinds and ratio of emulsifiers on properties of the emulsion were investigated. The results indicated that, the proper- ties of emulsion was best when using water soluble azo initiator Y and anionic/cationic compound emulsifiers（ ratio was 1： 5） ;this emulsion had higher solid content, smaller particle size,better mechanical stability and lower water absorbency of copolymer film than the other emulsions with the same monomer ratio.

关 键 词：乳化剂 引发剂 乳液性能 稳定性 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]