| PS/Ag核壳结构复合微球的制备与性能 |
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| 引用本文： | 段涛, 唐永建, 涂鸿, 等. PS/Ag核壳结构复合微球的制备与性能[J]. 强激光与粒子束, 2010, 22(10). |
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| 作者姓名： | 段涛 唐永建 涂鸿 罗江山 |
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| 作者单位： | 1.中国工程物理研究院 激光聚变研究中心, 四川 绵阳 621 900;;;2.西南科技大学 极端条件物质特性实验室, 四川 绵阳 621 01 0 |
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| 基金项目： | 国家重点基础研究发展计划项目，四川省教育厅青年基金，四川省科技计划项目 |
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| 摘 要： | 以乳液聚合法制备的平均粒径1.2～1.5 μm单分散聚苯乙烯（PS）微球为核，经过超声敏化、化学镀、还原等过程制备了PS/Ag核壳结构复合微球。采用透射电镜、X射线衍射、红外光谱、紫外可见光谱对其形貌、物相、结构与光学性质进行了表征与分析。结果表明：PS/Ag复合微球粒径相对均一；通过多次敏化、控制二次银氨溶液浓度（0.002～0.006 mol/L），可实现对纳米银壳层厚度的调控；纳米银壳层沉积生长过程中，随着PS微球表面银粒子的增多、增大，复合微球的光学等离子体共振吸收峰产生显著的展宽与红移。
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| 关 键 词： | 核壳微球 聚苯乙烯微球 纳米银 等离子共振吸收 |
| 收稿时间： | 1900-01-01; |
Synthesis and properties of core-shell PS/Ag microspheres |
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| duan tao, tang yongjian, tu hong, et al. Synthesis and properties of core-shell PS/Ag microspheres[J]. High Power Laser and Particle Beams, 2010, 22. |
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| Authors: | Duan Tao Tang Yongjian Tu Hong Luo Jiangshan |
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| Affiliation: | 1. Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China;;;2. Laboratory for Matter Characteristic Research at Extreme Condition,Southwest University of Science and Technology,Mianyang 621010,China |
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| Abstract: | Monodisperse polystyrene(PS) microspheres with average sizes of 1.2 to 1.5 μm were obtained by emulsion polymerization. Using PS microspheres as the cores, some PS/Ag core shell particles were prepared after ultrasonic sensitization, deoxidization and electroless process. Their morphology, component, structure and optical properties were characterized and investigated by transmission electron microscopy, X-ray diffraction, infrared ray, and UV-Vis adsorption spectra. The results indicate that the size distribution of the composite particles is narrow and the shell thickness of silver can be controlled by multiple sensitization and adjusting the second concentration of ［Ag(NH4)2］+, from 0.002 to 0.006 mol/L. In addition, while the silver nanoparticles coated on the polystyrene grows, the |
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| Keywords: | polystyrene microspheres silver nanoparticle plasmon resonance absorption |
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