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在分散体系中 ,两种功能性硅烷 ,甲基丙烯酰氧丙基三甲基硅烷 (MPTES)和氨丙基三甲基硅烷 (APTES)在纳米氧化硅表面形成自组装单分子层 ,用XPS和FTIR对所得自组装单分子层进行了表征 .元素分析结果表明 ,所得功能性纳米氧化硅中的功能基含量分别为 1.0 3mmol/g甲基丙烯酰氧基 /丙烯酰氧丙基纳米氧化硅 (MPSN)和 3.34mmol/g氨基 /氨丙基纳米氧化硅 (APSN) .LSS分析结果表明 ,未修饰纳米氧化硅、MPSN和APSN在甲苯分散体系中的平均流体力学直径大约分别为 2 4 0、4 5和 5 6 0nm .
In the dispersion system, two functional silanes, methacryloyloxypropyltrimethylsilane (MPTES) and aminopropyltrimethylsilane (APTES) formed a self-assembled monolayer on the surface of nanosilica. XPS And FTIR were used to characterize the self-assembled monolayer.The results of elemental analysis showed that the content of functional groups in the functional nanosilica was 1.0 3 mmol / g methacryloyloxy / acryloyloxypropyl nanosilica (MPSN) and 3.34 mmol / g APN.The results of LSS analysis showed that the average hydrodynamic diameters of unmodified nano-silica, MPSN and APSN in toluene dispersion system were about 240 , 45 and 5600 nm.