【摘要】 以甲基丙烯酸甲酯 ( MMA)和丙烯酸乙酯 ( EA)为主单体 ,甲基丙烯酰氧乙基三甲基氯化铵( DMC)为功能单体 ,分别采用 4种阳离子乳化剂和阴离子引发剂过硫酸铵 ( A PS)进行自由基乳液共聚合。探讨了乳化剂种类和用量、聚合温度及加料方式对乳胶粒大小、胶乳稳定性和胶膜耐水性的影响。研究发现 ,当采用十六烷基三甲基氯化铵 ( 16 31)作乳化剂 ,用量为 1.75%～ 2 .0 % ,聚合温度为 70℃ ,采用种子半连续法可以成功研制出粒径为 57.5nm、稳定的耐水性较好的阳离子型聚合物纳米粒子胶乳更多还原

【Abstract】 The radical emulsion copolymerization of methyl methacrylate (MMA) and ethyl acrylate (EA) in the presence of functional monomer (2-methacryloxy ) ethyl trimethylammonium chloride(DMC) was carried out using four kinds of cationic surfactants as emulsifiers and ammonium persulfate(APS) as anionic initiator. Effects of emulsifier types and amounts, polymerization temperature and feed methods on particle size, stability of latex and water proofing property of films were investigated. The results showed that a kind of 57.5nm particle size ,stable cationic polyacrylic latex was successfully prepared when cetyltrimethylammomium chloride(1631) was used in seeded semi-continuous process under the condition of 70℃ 1.75%～2.0% amount.更多还原