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无机材料学报

无机材料学报

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碱式氯化镁晶须表面接枝甲基丙烯酸甲酯聚合反应的研究

张 路, 陈雪刚, 姚志通, 叶 瑛, 夏枚生   

  1. 浙江大学 理学院 地球科学系, 杭州 310000
  • 收稿日期:2008-11-28 修回日期:2009-03-10 出版日期:2009-07-20 网络出版日期:2009-07-20

Study on the Radical Grafting Polymerization of MMA onto Basic Magnesium Chloride Whisker Surface

ZHANG Lu, CHEN Xue-Gang, YAO Zhi-Tong, YE Ying, XIA Mei-Sheng   

  1. Department of Earth Sciences, College of Science, Zhejiang University, Hangzhou 310000, China
  • Received:2008-11-28 Revised:2009-03-10 Published:2009-07-20 Online:2009-07-20

PDF (PC)

1681

被引次数

29 | 4

摘要： 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%）.

关键词: 纳米碱式氯化镁晶须, 硅烷偶联剂, 甲基丙烯酸甲酯, 分散介质, 接枝聚合

Abstract: 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.

Key words: nano-basic magnesium chloride whisker, silane coupling agent, methyl methacrylate, disperse medium, graft polymerization

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