聚苯乙烯/丙烯酸丁酯/纳米碳酸钙复合微粒的制备与表征  

Preparation and characterization of polystyrene/butyl acrylate/nano CaCO_3 composites

作　　者：张雪琴[1,2] 毋伟[1,2] 曾晓飞[1,2] 陈建峰[1,2] 

机构地区：[1]北京化工大学纳米材料先进制备技术与应用科学教育部重点实验室 [2]教育部超重力工程研究中心,北京100029

出　　处：《北京化工大学学报（自然科学版）》2005年第1期1-4,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家自然科学基金重点项目 (20236020);教育部科学技术研究重大项目(重大0202)

摘　　要：将苯乙烯 (St)、丙烯酸丁酯 (BA)在纳米碳酸钙粒子存在下的水相悬浮液中进行无皂乳液聚合 ,制备纳米碳酸钙聚合物复合微粒。通过透射电镜 (TEM )、红外光谱 (IR)、热重 (TG)等手段对其进行表征 ,证明通过该工艺可以实现聚合物在纳米碳酸钙表面的包覆。复合微粒与纳米碳酸钙相比 ,耐酸性明显增强 ;ξ电位发生了变化 。By means of a soapless emulsion polymerization method, the polymerization of styrene(St) and butyl acrylate (BA) on the surface of nano CaCO 3 in an aqueous phase was carried out.The interactions between the nanoparticles and the polymer were studied by thermogravimetric(TG) measurement, Fourier transform infrared spectrograph (FTIR) and transmission electron microscopy (TEM). It is found that there is an interfacial interaction between the polymer and the nano CaCO 3 by this process. By comparison of the nano CaCO 3 and the composites, the acid resistance of the composites is increased to some extent, Zeta potentials (ζ) and the surface electricity of the particles are greatly changed after encapsulation.

关 键 词：纳米碳酸钙 无皂乳液聚合 包覆 表征 

分 类 号：TQ316.343[化学工程—高聚物工业]