摘要
采用不同类型的硅烷偶联剂对钛酸钡进行表面修饰,实施接枝聚合,制备聚苯胺/钛酸钡核壳结构的复合粒子。借助SEM、XRD和TG等分析方法对复合粒子的表观形貌和结构进行表征,应用Gaussian03软件对硅烷偶联剂分子在钛酸钡表面接枝的几何构型进行计算。理论计算与实验结果表明,采用硅烷偶联剂后,在钛酸钡表面有效地实施了接枝聚合,硅烷偶联剂的类型对包覆量和复合粒子的密度有着显著的影响,反应型的硅烷偶联剂能够更好地作用于钛酸钡的表面,形成稳定核壳结构的复合粒子。
The inorganic/organic complex particles of BaTiO3/PAn were prepared by the method of surface grafting polymerization, in which two kinds of silane couplings agent were used. The complex particles＇ morphology and structure were detected by SEM, XRD and TG. The grafting on the surface between the two silane couplers and the barium titanate grain were optimized by the soft Gaussian 03. The results showed that the grafting polymerization was processed on the surface of BaTiO3. The types of silane coupling played an important role on the density of the complex particles and the content of inclusion in the complex particles. The reactive silane coupling agent could cover BaTiO3 perfectly and make the shell-core combine stablely.
出处
《功能材料》
EI
CAS
CSCD
北大核心
2007年第11期1820-1823,1830,共5页
Journal of Functional Materials
基金
重庆自然科学基金资助项目(2006BB4129)
关键词
聚苯胺
钛酸钡
硅烷偶联剂
表面修饰
polyaniline
barium titanate
silane coupling agent
surface modified
