高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

PMMA纳米球的制备及其银膜包覆技术

陈志华1,2, 吴政1, 张其清2, 包建军1,4, 王连洲1,3, 逯高清1,3, 朱贤方1,2,3   

    1. 厦门大学中国-澳大利亚联合功能纳米材料实验室, 物理系,
    2. 材料学院生物医学工程研究中心, 材料学院, 厦门 361005;
    3. ARC Centre of Excellence for Functional Nanomaterials, University of Queensland, St Lucia, Brisbane, Qld 4072, Australia;
    4. 四川大学高分子研究所, 高分子材料科学与工程国家重点实验室, 四川 610065
  • 收稿日期:2007-12-27 修回日期:1900-01-01 出版日期:2008-10-10 发布日期:2008-10-10
  • 通讯作者: 朱贤方

Preparation of Polymethyl Methacrylate(PMMA) Nanosphere and Technique of Coating Ag Layer

CHEN Zhi-Hua1,2, WU Zheng1, ZHANG Qi-Qing2, BAO Jian-Jun1,4, WANG Lian-Zhou1,3, LU Gao-Qing1,3, ZHU Xian-Fang1,2,3*   

    1. China-Australia Joint Laboratory for Functional Nanomaterials and Department of Physics,
    2. Research Center of Biomedical Engineering, Materials College, Xiamen University, Xiamen 361005, China;
    3. ARC Centre of Excellence for Functional Nanomaterials, University of Queensland, St Lucia, Brisbane Qld 4072, Australia;
    4. State Key Laboratory of Polymer Materials Science and Engineering, Institute of Polymers, Sichuan University, Chengdu 610065, China
  • Received:2007-12-27 Revised:1900-01-01 Online:2008-10-10 Published:2008-10-10
  • Contact: ZHU Xian-Fang

PDF (PC)

被引次数

10

摘要： 采用无皂乳液聚合法制备了单分散、直径为170 nm左右的聚甲基丙烯酸甲酯(PMMA)纳米球, 然后利用3-甲基丙烯酰氧基丙基三甲氧基硅烷(MATS)和3-巯丙基三甲氧基硅烷(MPTMS)对PMMA纳米球进行表面改性, 在其表面包覆一层均匀的巯基, 通过巯基与银离子之间的相互作用, 使银在PMMA纳米球表面成核长大, 从而合成PMMA/Ag纳米球壳粒子. 通过扫描电子显微镜、投射电子显微镜和紫外-可见吸收光谱测试技术对产物性能进行了表征, 研究结果表明, 制备的PMMA/Ag纳米球壳粒子的分散性好、包覆均匀.

关键词: 无皂乳液聚合法, 表面改性, 纳米PMMA/Ag球壳结构

Abstract: In this paper, we reported a two-step technique for fabrication of PMMA/Ag nano coreshell structure with well-established processing parameters and an ease control. Firstly, we fabricated the monodisperse PMMA nanospheres with a diameter of about 170 nm by emulsifier-free emulsion polymerization. Then, we modified the PMMA nanospheres surface with (3-methacryloxypropyl) trimethoxysilane(MATS) and (3-mercaptopropyl) trimethoxysilane(MPTMS), resulting in a uniform sulfhydryl (SH)-group modified outlayer and Ag nanoparticles further grew on the modified surface of PMMA nanospheres with an effective interaction between sulfhydryl(SH) groups and Ag+. In doing so, finally we synthesized PMMA/Ag core-shell composited nanoparticles. The structure of the synthesized sample was investigated by scanning electron microscopy(SEM), transmission electron microscopy(TEM) and UV-Vis extinction spectra. The results indicate that the well-dispersed PMMA/Ag core-shell nanoparticles with uniform particle size distribution were successfully fabricated using this improved technique.

Key words: Emulsifier-free emulsion polymerization, Surface modification, Nano PMMA/Ag coreshell structure

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