利用表面接枝的方法,在纳米TiO2上接枝偶联剂γ-MPS (3-(三甲氧硅基)丙基异丁烯酸)形成"杂化"单体,通过加入引发剂引发甲基丙烯酸甲酯(MMA)在粒子表面发生自由基聚合,形成PMMA/γ-MPS/TiO2纳米复合粒子.通过IR、元素分析、 TGA等方法表征了PMMA/γ-MPS/TiO2纳米复合粒子的结构,定量研究了TiO2/γ-MPS单体接枝率和转化率,PMMA/γ-MPS/TiO2纳米复合粒子的接枝率及其相应的影响因素.结果表明:PMMA以化学键的形式连接在纳米TiO2粒子表面并具有较高的接枝率.
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