中空聚合物微球的制备——溶胀处理条件的影响  

Preparation of Hollow Latex Particles——Effect of Swelling Conditions

作　　者：王东伟[1] 吴佑实[1] 吴莉莉[1] 石元昌[1] 盖红德[1] 

机构地区：[1]山东大学材料科学与工程学院,山东济南250061

出　　处：《化工时刊》2008年第2期19-22,共4页Chemical Industry Times

基　　金：山东省科技攻关计划项目2005GG3203096

摘　　要：采用种子乳液聚合法合成不同核壳比的聚甲基丙烯酸(MAA)-丙烯酸丁酯(BA)-甲基丙烯酸甲酯(MMA)/聚苯乙烯(St)-丙烯腈(AN)核壳乳液,经碱/酸溶胀法处理制备了中空聚合物微球。结果表明,中空聚合物的形态不仅与核壳比有关,也与溶胀处理时碱的种类、温度、溶胀剂及其用量、乳液pH值等因素有关,当核壳比为1∶10,溶胀剂用量为核壳乳胶粒质量的1.5倍时,可以得到最大中空度接近30%的中空聚合物微球。The core/shell polymer particles of Poly（methyl acrylic acid-buthyl acrylate-methyl methacrylate）/Poly （styrene-acrylonitrile） with different core/shell weight ratios were synthesized by seeded emulsion polymerization. The hollow polymer particles were obtained by stepwise alkali/acid treatment. It was found that the morphology of hollow polymer particles after neutralization depends on core/shell weight ratio as well as the conditions such as base type, temperature, swelling agent, emulsion pH. The hollow polymer particles with maximum honow volume of nearly 30% were obtained at the value of core/shell weight ratio equal to 1/10.0, and the ratio of swelling agent to core/shell polymer by weight was 1.50.

关 键 词：中空聚合物微球 中空度 碱/酸处理 核壳结构 

分 类 号：TQ316.3[化学工程—高聚物工业]