聚苯乙烯/纳米TiO_2复合粒子的制备  

Preparation of Nanometer TiO_(2)/PS Composite Particles

作　　者：邱晓清[1] 钟家柽[1] 龙震[1] 田丽红[1] 昝菱[1] 龚楚清[1] 罗其荣[1] 

机构地区：[1]武汉大学化学与分子科学学院,湖北武汉430072

出　　处：《武汉大学学报（理学版）》2003年第6期675-679,共5页Journal of Wuhan University:Natural Science Edition

基　　金：国家重点科技项目攻关计划资助(96 554 03 01)

摘　　要：用硅烷偶联剂WD 70改性纳米TiO2粒子,应用超声技术将纳米TiO2粒子分散在异丙醇介质中,然后进行苯乙烯的分散聚合包覆,成功地制备了以聚苯乙烯为壳、纳米TiO2粒子为核的有机/无机复合粒子.观察复合粒子的形貌发现纳米TiO2粒子完全包覆在聚苯乙烯微球中.通过红外、X射线光电子能谱等表征手段,还发现聚苯乙烯链是通过偶联剂WD 70以化学键的方式与纳米TiO2粒子相连.The organic-inorganic composite particles which consist of an inorganic core surrounded by a polymer shell were successfully preparated by dispersion polymerization of styrene. The nanometer titanium dioxide particles were modified with coupling agent WD-70 and dispersed in the medium applying the ultra-sonic technique and then encapsulated by dispersion polymerization of styrene. The inorganic particles were entirely contained in the polystyrene micro-spheres as evidenced by TEM. It is shown that some polystyrene(PS) chains are chemically bonded to the nanometer titanium dioxide particles through the coupling agent WD-70 as evidenced by FTIR,XPS.

关 键 词：分散聚合 壳-核结构 纳米TIO2 复合粒子 制备 硅烷偶联剂 WD-70 超声技术 

分 类 号：O612.4[理学—无机化学]