聚苯乙烯/纳米TiO₂复合粒子的制备

聚苯乙烯/纳米TiO 2 复合粒子的制备 Preparation of Nanometer TiO 2 /PS Composite Particles 邱晓清 QIU Xiao-qing 1 2 first-author 钟家柽 ZHONG Jia-cheng 1 2 龙震 LONG Zhen 1 2 田丽红 TIAN Li-hong 1 2 昝菱 ZAN Ling 1 2 龚楚清 GONG Chu-qing 1 2 罗其荣 LUO Qi-rong 1 2 武汉大学化学与分子科学学院 武汉大学化学与分子科学学院 College of Chemistry and Molecular Sciences,Wuhan University College of Chemistry and Molecular Sciences,Wuhan University 武汉大学化学与分子科学学院,湖北,武汉,430072 武汉大学化学与分子科学学院,湖北,武汉,430072 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. 分散聚合 壳核结构 纳米TiO2 dispersion polymerization core-shell morphology nanometer TiO2 TQ325 国家重点科技项目攻关计划资助（96 554 03 01） 2003-06-01 2021-04-01 6