采用卤水法自制纳米级碱式氯化镁晶须（nano-BMC）为原料, 晶须表面经硅烷偶联剂γ-MPS处理后, 以水溶性引发剂K2S2O8（KPS）在乙醇/水混合溶剂中引发甲基丙烯酸甲酯（MMA）进行表面接枝聚合反应, 制备了nano-BMC/γ-MPS/PMMA纳米复合材料, 通过FT-IR、SEM、XRD表征了nano-BMC/γ-MPS/PMMA纳米复合材料的结构及形态, 讨论了反应条件对晶须形貌保存、接枝聚合反应效果的影响. 结果表明：反应条件对nano-BMC晶须形貌有明显的影响; 乙醇/水介质配比为8∶2、反应温度82℃、反应时间6h时, nano-BMC晶须形貌能够被较好地保存, 且接枝效率达到最高（56.1%）.
The composite material nano-BMC/γ-MPS/PMMA was prepared using nano-BMC as raw material, which was obtained by brine method. The nano-BMC whisker was pretreated by silane coupling agent 3-(trimethoxysilyl) propyl methacrylate (γ-MPS) and then conducted to surface radical grafting polymerization which is initiated by water-soluble initiator K2S2O8 in ethanol/water mixture. The structure and morphology of nano-BMC/γ-MPS/PMMA was characterized by Fourier Transformed Infrared Spectroscope (FT-IR), Scanning Electron Microscope (SEM) and X-ray Diffraction (XRD) analysis. The influences of reaction conditions on the conservation of whisker morphology and grafting polymerization were investigated. The result shows that the reaction conditions have a significant effect on the morphology of nano-BMC whisker. The grafting efficiency reaches 56.1% and the morphology of nano-BMC whisker is well conserved when the reaction is kept at 82℃ for 6h in the ethanol-water solution with the 8∶2 ratio of ethanol to water.
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