亲油性纳米TiO_2/PMMA复合粒子的制备及表征  

Characterization and Preparation of Oil-Soluble Nano-TiO_2/PMMA Composite Particles

作　　者：刘阳思[1] 许艳[1] 张玉波[1] 颜家振[1] 李长志[1] 黄婉霞[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610064

出　　处：《高分子材料科学与工程》2008年第11期47-50,共4页Polymer Materials Science & Engineering

基　　金：四川省科技厅重点科技攻关项目(2006Z08-001-6)

摘　　要：采用种子乳液聚合法对纳米TiO2进行表面改性,将甲基丙烯酸甲酯包覆在纳米TiO2表面,形成TiO2/PMMA复合粒子。采用FT-IR、UV-Vis、XPS、TEM等分析手段对所得产物的表观形貌、所携带官能团、表面元素变化和在有机溶剂中的分散性等进行了表征。结果表明,复合粒子呈现核壳结构,粒子的团聚现象和分散性都得到改善,亲油性增强。Surface modification of nano-TiO2 was realized via seed emulsion polymerization. Poly （methyl methacrylate） /Titanium Dioxide （TiO2/PMMA） composite particles were prepared by coating methyl methacrylate on the surface of nano-TiO2 particles. The morphology, surface functional groups, surface elements and dispersibility in organic solvent of the particles were characterized by FT- IR, XPS,UV-Vis, TEM. The result shows that the composite particles have a core-shell structure and the accumulation, dispersion and hydrophobic property are all improved.

关 键 词：纳米TIO2 甲基丙烯酸甲酯 种子乳液聚合 表面改性 

分 类 号：TB383[一般工业技术—材料科学与工程]