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以具有不饱和双键的油酸为表面活性剂，甲基丙烯酸甲酯为活性溶剂制备了稳定的纳米TiO2溶胶，将溶胶自由基引发聚合制成了纳米TiO2粒子／聚甲基丙烯酸甲酯均匀分散系结果表明高聚物中存在以TiO2超微粒为核心交联网络结构.用透射电镜观察和紫外－可见光吸收谱测量油酸包覆的纳米TiO2微粒在有机环境中的形貌、分布及尺寸变化当溶胶中TiO2的浓度小于或等于0．032％（mol百分数，下同）时，TiO2的粒径呈一窄的单分布范围为5～30nm．浓度高于0．032％时，粒子长大，粒径分布在两个区：5～30nm和50～180nm．加油酸的溶胶中TiO2颗粒形状呈类球形，未加油酸的溶胶中大部分粒子呈圆球形.
A stable nano-TiO2 sol was prepared by using oleic acid with unsaturated double bond as surfactant and methyl methacrylate as active solvent, and then the free radical of sol was polymerized to make nano-TiO2 particles / polymethylmethacrylate uniform Dispersion results show that the presence of TiO2 ultrafine particles in the polymer as the core cross-linked network structure.The morphology, distribution and size of oleic acid coated nano-TiO2 particles in organic environment were measured by transmission electron microscopy and UV-Vis absorption spectroscopy Varying When the concentration of TiO2 in the sol is less than or equal to 0.032% (mol%, the same applies hereinafter), the particle size of TiO2 shows a narrow single distribution range of 5-30 nm. Concentrations higher than 0.032%, the particles grow, particle size distribution in two regions: 5 ~ 30nm and 50 ~ 180nm. The shape of TiO2 particles in spiked sols was spheroidal, and most of the particles in the spiked sols were spherical.