| 纳米银镓合金/聚甲基丙烯酸甲酯复合粒子的结构表征 |
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| 引用本文： | 章建忠,徐国财,王艳丽,陈伟章.纳米银镓合金/聚甲基丙烯酸甲酯复合粒子的结构表征[J].复合材料学报,2007,24(4):67-70. |
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| 作者姓名： | 章建忠 徐国财 王艳丽 陈伟章 |
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| 作者单位： | 安徽理工大学 化学工程系, 淮南 232001 |
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| 基金项目： | 教育部科技基金重点项目（206064）;安徽省自然科学基金项目（050440907）;安徽省高校科研基金项目（2004kj015zd） |
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| 摘 要： | 在不加任何引发剂和金属还原剂的条件下, 超声辐射双原位引发乳液聚合制备纳米银镓合金/聚甲基丙烯酸甲酯(Ag-Ga/PMMA)复合粒子。利用HREM、 EDS、 XRD等对复合粒子进行了分析, 表明所制得的乳胶粒子具有典型的核壳结构, 粒径为80~200nm, 分布均匀, 单分散性好, 基本没有出现团聚。乳胶粒子中成壳部分的聚合物产生了一层层有序组装的现象。XRD证明, 有纳米合金Ag0.72Ga0.28存在; 此外还出现了2个新的衍射峰, 推断可能是新的银镓合金物质。
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| 关 键 词： | 超声辐射 银镓合金 聚甲基丙烯酸甲酯 核壳结构 |
| 文章编号： | 1000-3851（2007）04-0067-04 |
| 收稿时间： | 2006-08-11 |
| 修稿时间： | 2007-02-01 |
Characterization of the structure of Ag-Ga/PMMA nanoparticles |
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| ZHANG Jianzhong,XU Guocai,WANG Yanli,CHEN Weizhang.Characterization of the structure of Ag-Ga/PMMA nanoparticles[J].Acta Materiae Compositae Sinica,2007,24(4):67-70. |
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| Authors: | ZHANG Jianzhong XU Guocai WANG Yanli CHEN Weizhang |
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| Affiliation: | Department of Chemical Engineering, Anhui University of Science and Technology, Huainan 232001, China |
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| Abstract: | The core-shell Ag-Ga/polymethyl methacrylate nanoparticles were prepared by the emulsion polymerization method under ultrasonic irradiation in-situ without any initiators or metal reducer. HREM, EDS and XRD experiments were performed to characterize the nanoparticles. The results indicate that the nanocomposite particles possess a core-shell structure with diameters of 80-200 nm, as well as excellent monodispersity. The phenomenon that the polymer forms the shell via layer-by-layer self-assembly is found. XRD proves the existence of Ag0. 72 Ga0. 28 and the probability of new Ag-Ga alloy because of two unknown diffraction peaks. |
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| Keywords: | ultrasonic irradiation Ag-Ga alloy polymethyl methacrylate core-shell structure |
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