丙烯酸酯系互穿网络聚合物乳液的微观形貌  

Morphology of acrylic latex interpenetrating polymer networks damping material

作　　者：曾晓翘[1] 范慧俐[1] 杨敏[1] 郑延军[1] 张奇[1] 翟陈富[1] 

机构地区：[1]北京科技大学应用科学学院,北京100083

出　　处：《北京科技大学学报》2009年第5期612-617,共6页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(No.50533060)

摘　　要：采用乳液聚合法,合成了聚甲基丙烯酸甲酯(MMA)-苯乙烯(St)/聚丙烯酸乙酯(EA)-丙烯酸丁酯(BA)的丙烯酸酯系互穿网络聚合物(IPNs)系列乳液,使用磷钨酸(PTA)负染技术将乳液粒子染色,使用透射电子显微镜(TEM)观察乳液粒子的微观形貌,对乳液微粒微观互穿网络壳-核结构的形成过程进行了研究.结果表明,网络质量配比、溶胀时间以及溶胀方式等因素均对乳液粒子微观形貌的形成产生显著影响;网络质量配比是决定乳液粒子大小的重要因素之一,溶胀时间影响互穿网络壳结构的厚度,溶胀方式影响乳液的成膜性能.A series of P（MMA-St）/P（BA-EA） acrylic latex interpenetrating polymer networks （IPNs） were prepared by employing emulsion polymerization method. Stained by a PTA （phosphotungstic acid） negative staining technique, latex particles were observed by using transmission electron microscope （TEM） to study their micro-structures and reaction processes. The results show that mass ratio of networks, swelling time and swelling style are all critical factors which influence the microstructures of latex particles greatly. The mass ratio of two networks determines the size of latex particles. Meanwhile, swelling time had dramatic effects on the thickness of the shell structure of IPNs, and swelling style affected the properties of latex films.

关 键 词：互穿网络 壳核结构 乳液 丙烯酸酯 

分 类 号：TQ316.33[化学工程—高聚物工业]