| 化学自组装法制备钡铁氧体亚微空心球 |
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| 引用本文： | 甘治平,官建国. 化学自组装法制备钡铁氧体亚微空心球[J]. 物理化学学报, 2006, 22(2): 189-192. DOI: 10.3866/PKU.WHXB20060212 |
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| 作者姓名： | 甘治平 官建国 |
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| 作者单位： | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China |
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| 基金项目： | 总装预研基金项目(No.51447020205QT6904)，电磁兼容性国防科技重点实验室项目资助 |
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| 摘 要： | 描述了一种基于化学自组装制备钡铁氧体亚微空心球的新颖方法, 即以聚(苯乙烯-共-丙烯酸)乳胶粒子为模板, 利用酸醇相互作用, 将在聚乙二醇水溶液中得到的钡铁氧体前驱物包覆在模板粒子上, 形成聚(苯乙烯-共-丙烯酸)/钡铁氧体前驱物核壳纳米复合粒子. 复合粒子经历750 ℃的热处理, 可获得主晶相为BaFe12O19的钡铁氧体亚微空心球. 该空心球有可能在微波吸收、电磁流变等领域得到重要应用.
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| 关 键 词： | 空心球 钡铁氧体 化学自组装 聚(苯乙烯-共-丙烯酸) 核壳纳米复合粒子 |
| 收稿时间： | 2005-07-21 |
| 修稿时间： | 2005-10-08 |
Chemical Self-assembly Route to Fabricate Hollow Barium Ferrite Submicrospheres |
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| GAN,Zhi-Ping,GUAN,Jian-Guo. Chemical Self-assembly Route to Fabricate Hollow Barium Ferrite Submicrospheres[J]. Acta Physico-Chimica Sinica, 2006, 22(2): 189-192. DOI: 10.3866/PKU.WHXB20060212 |
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| Authors: | GAN Zhi-Ping GUAN Jian-Guo |
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| Affiliation: | State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China |
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| Abstract: | A novel strategy of preparing of hollow barium ferrite submicrospheres based on chemical self-assembly technique is described in this paper. That is, using poly (styrene-co-acrylic acid) latexes as template, the chemical interaction between the carboxyl groups on the latex surface and the hydroxyl groups on the surface of barium ferrite precursor prepared in poly-glycol solution results in the formation of poly(styrene-co-acrylic acid)/ barium ferrite precursors core-shell nanocomposite particles. Heat-treatment of the composite particles by upgrading temperature to 750 ℃ leads to hollow barium ferrite submicrospheres with BaFe12O19 crystal phase mainly. The products might find significant applications in such fields as radar absorbers or electro-magneto-rheological fluids. |
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| Keywords: | Hollow spheres Barium ferrite Chemical self-assembly Poly(styrene-co- acrylic acid) Core-shell nanocomposite particles |
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