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  

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

作　　者：张路[1] 陈雪刚[1] 姚志通[1] 叶瑛[1] 夏枚生[1] 

机构地区：[1]浙江大学理学院地球科学系,杭州310000

出　　处：《无机材料学报》2009年第4期859-863,共5页Journal of Inorganic Materials

基　　金：浙江省宁波市自然科学基金(2008B10036)

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%).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.

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 

分 类 号：TQ316[化学工程—高聚物工业] O614[理学—无机化学]