| 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 |
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| 引用本文： | 奚强,赵春芳,李蕾,李亮,赵雷,程时远. 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[J]. 化学物理学报(中文版), 2003, 16(2): 135-140. DOI: 10.1088/1674-0068/16/2/135-140 |
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| 作者姓名： | 奚强 赵春芳 李蕾 李亮 赵雷 程时远 |
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| 作者单位： | 奚强,赵春芳,李蕾,李亮(武汉化工学院制药系,武汉,430074);赵雷,程时远(湖北大学化学与材料学院,武汉,430063) |
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| 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.
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| 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 |
Reverse Microemulsion Template Polymerization in Site and Structure Characterization of Nano-AgCl/PMMA Composites |
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| Xi Qianga,Zhao Chunfang,Li Lei,Li Liang,Zhao Lei,Cheng Shiyuan. Reverse Microemulsion Template Polymerization in Site and Structure Characterization of Nano-AgCl/PMMA Composites[J]. Chinese Journal of Chemical Physics, 2003, 16(2): 135-140. DOI: 10.1088/1674-0068/16/2/135-140 |
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| Authors: | Xi Qianga Zhao Chunfang Li Lei Li Liang Zhao Lei Cheng Shiyuan |
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| Affiliation: | {{each article.affiliations aff i}} {{if aff.addressEn && aff.addressEn != ""}} {{if aff.label && aff.label != "" && article.affiliations.length != 1}}{{@ aff.label}}.{{/if}}{{@ aff.addressEn}}{{/if}} {{/each}} |
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| 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. |
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| Keywords: | Methyl methacrylate Nano-AgCl Reversed microemulsion Polymerization in site nano-composite |
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