核壳型PVAc/PBA乳液的制备与表征  

Synthesis and characterization of P (VAc /BA) emulsion with core-shell structure

作　　者：张奎[1] 屈龙[1] 张红[1] 朱勇[1] 王平华[1] 

机构地区：[1]合肥工业大学化工学院高分子科学与工程系,安徽合肥230009

出　　处：《粘接》2009年第11期51-54,共4页Adhesion

摘　　要：以醋酸乙烯酯(VAc)为核单体,丙烯酸丁酯(BA)为壳单体,二甲基丙烯酸乙二醇酯(EGDMA)为交联剂,采用分阶段饥饿态加料方式和半连续乳液聚合方法合成了具有硬核软壳结构的聚(醋酸乙烯酯/丙烯酸丁酯)。采用OP-10和十二烷基硫酸钠(SDS)质量比为2∶1的复合乳化剂,用量为4%左右时乳液稳定;壳单体的滴加速度在5￣6g/h时,聚合体系稳定,且转化率高。用FT-IR分析了聚合物的结构;并用透射电镜表征了乳胶粒结构。An acrylate emulsion, PVAc/PBA, with hard core-soft shell structure was synthesized by semi-continuous emulsion polymerization under monomer starved condition. VAc was used as the core monomer and butyl acrylate as the shell monomer. Ethylene glycol dimethacrylate was used as crosslinking agent for the core. The results indicated that the system was stable for the ratio （OP-10 /SDS） of 2 ： 1 and the emulsifier concentration of about 4%. The monomer had a high conversion rate at addition rate of 5-6 g/h for shell monmer. The structure of PVAc/PBA polymer was analyzed by FT-IR. The morphology of the latex was characterized by TEM.

关 键 词：醋丙乳液 核壳结构 聚合 

分 类 号：TQ331.4[化学工程—橡胶工业]