Preparation and Characterization of Composite Microspheres with Sensitive Properties

本文结合二氧化钛(TiO2)、N-异丙基丙烯酰胺(NIPAM)和丙烯酸(AA)的特性，制备了具有光敏、温敏和pH敏感性能的复合微球，并进一步考察了复合微球在不同温度和pH值下对甲基橙溶液(MO)的光降解反应。 用溶胶凝胶法制备了TiO2纳米粒子，并用γ-甲基丙烯酰氧基丙基三甲氧基硅烷(γ-MPS)对表面进行改性，继而采用光引发自由基聚合制备了P(NIPAM-co-AA)包裹TiO2的复合微球，考察了共聚单体AA、表面活性剂司盘80(Span80)在反应体系中的加入量对制备微球的影响，并比较了不用干燥方法对微球成球的影响。 通过傅里叶红外光谱(FTIR)、热重分析(TGA)、X射线衍射(XR...Composite microspheres with photo-, thermo- and pH-sensitive properties were prepared using titanium dioxide (TiO2), N-isopropylacrylamide (NIPAM) and acrylic acid (AA). Then their photodegradation of methyl orange (MO) solution under different temperatures and pHs was studied. TiO2 nanoparticles were prepared by sol-gel method and modified by silane coupling agent, γ-methacryloxypropyltrimethoxy...学位：工学硕士院系专业：化学化工学院化学工程与生物工程系_化学工程学号：2062007115090