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Reverse Microemulsion Template Polymerization in Site and Structure Characterization of Nano-AgCl/PMMA Composites
Xi Qianga*,Zhao Chunfang,Li Lei,Li Liang,Zhao Lei,Cheng Shiyuan
Author NameAffiliationE-mail
Xi Qianga* Department of Pharmarcy, Wuhan Institute of Chemical Technology, Wuhan 430074 xiqiang64@163.com 
Zhao Chunfang Department of Pharmarcy, Wuhan Institute of Chemical Technology, Wuhan 430074  
Li Lei Department of Pharmarcy, Wuhan Institute of Chemical Technology, Wuhan 430074  
Li Liang Department of Pharmarcy, Wuhan Institute of Chemical Technology, Wuhan 430074  
Zhao Lei College of Chemical and Material, Hubei University, Wuhan 430063  
Cheng Shiyuan College of Chemical and Material, Hubei University, Wuhan 430063  
Abstract:
The AgCl/PMMA nano-composite was prepared by polymerization of MMA in site through reverse microemulsion as template, in which the methyl methacrylate(MMA) was designated as oily phase instead of non-reactive functional group solvents. The advantage of this method is that nanocomposite are prepared without the process of modification of nano-particles with organic substances and dispersing them in the matrix. TEM shows that the particle size of nano-AgCl is 20~80 nm, and the scanning electron microscope (SEM) shows that nano-AgCl is dispersed in the PMMA. FTIR spectrum reveals that the micro-environment of H2O and carboxyl group has changed after the polymerization of MMA, which indicates that the interaction of nano-particle with polymer exists. DMTA spectrum results show that there is strong interaction of nano-particles with polymer chains, which restricts the mobility of polymer chains and forms an interphase layer. Ripening process affects the interaction of polymer with nano-particles. At the higher temperature ripening process, the interphase layer is overlapped and forms a continuous phase. DMTA reveals that the aqueous phase layer around the nanoparticles does not apparently affect the interaction of polymer with the nano-particles and the nano-particles acts as a cross-linker in the nanocomposite.
Key words:  Methyl methacrylate, Nano-AgCl, Reversed microemulsion, Polymerization in site, nano-composite
FundProject:
反相微乳液模板原位聚合制备纳米氯化银/聚甲基丙烯酸甲酯及其结构表征
奚强*,赵春芳,李蕾,李亮,赵雷,程时远
摘要:
用甲基丙烯酸甲酯(MMA)作油相,反相胶束微乳液作为模板,制备了纳米氯化银(AgCl)粒子,再进行原位聚合制备了纳米氯化银/聚甲基丙烯酸甲酯(AgCl/PMMA)复合材料.透射电镜(TEM)分析表明,纳米AgCl的尺寸为20~80 nm.扫描电镜(SEM)测试表明纳米AgCl粒子均匀地存在于PMMA基材中.红外分析证明,胶束中水和表面活性剂AOT的羰基在MMA聚合后微观环境发生变化,纳米粒子同聚合物之间有吸附行为.动态力学(DMTA)分析复合材料,发现纳米AgCl粒子与聚合物之间存在强烈相互作用,形成了中间相层(interphase layer),改变了聚合物的动态力学性能.
关键词:  甲基丙烯酸甲酯  纳米AgCl  微乳液  原位聚合  纳米复合材料
DOI:10.1088/1674-0068/16/2/135-140
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