摘要
以甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸-2-乙基己酯等为单体,过硫酸铵为引发剂,通过种子乳液聚合法合成了具有"硬核""软壳"结构的微相复合高分子乳液。透射电镜观察证实了此乳胶粒子的形态特征,表征了共聚物的玻璃化转变温度及薄膜的拉伸强度和吸水率。结果表明,所合成乳液的乳胶粒子具有预期的核-壳型结构,成膜物的玻璃化转变温度为13.6℃,其拉伸强度和耐水性比常规乳液聚合物有明显的提高。
Methylmethacrylate,butyl acrylate and 2-ethylhexyl acrylate and A-174 were used as monomers, ammonium persulfate(APS) as the initiator to synthesize the organosilicon/acrylate core-shell composite latex by two-stage emulsion polymerization. The particle morphology of the composite latex was observed by transmission electron microscopy, and glass transition temperature and hydroscopicity of copolymers were determined. It is found that the latex particle has core-shell structure, the glass transition temperature of copolymer is about (13.6) ℃. The core-shell copolymers synthesized possess better mechanical property and water resistance compared with the copolymers synthesized through normal emulsion polymerization techniques.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2005年第2期173-176,共4页
Polymer Materials Science & Engineering
关键词
丙烯酸酯
乳液聚合
核-壳结构
乳胶粒子
acrylate
emulsion polymerization
core-shell structure
latex particle
