| 导电、导磁聚苯胺纳米复合物的合成与表征 |
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| 引用本文： | 程国娥,黄开勋,柯汉忠.导电、导磁聚苯胺纳米复合物的合成与表征[J].地球科学,2004,29(1):65-68. |
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| 作者姓名： | 程国娥 黄开勋 柯汉忠 |
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| 作者单位： | 1.华中科技大学化学系, 湖北武汉 430074 |
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| 摘 要： | 在纳米Fe3O4晶体粒子存在的情况下, 用十二烷基苯磺酸钠(SDBS)作乳化剂及分散剂, 通过HCl调节体系的酸度, 合成了导电、导磁的Fe3O4-聚苯胺(Fe3O4-PANI)纳米复合物, 用X-衍射(XRD)、透射电子显微镜(TEM)、傅立叶红外(FT-IR)等对该复合物进行了表征, 结果显示: SDBS与HCl发生竞争掺杂行为, 复合物的组成为Fe3O4-PANI-DBSA, Fe3O4平均粒径约13 nm, 且均匀分布在聚苯胺基体中, 该复合物具有较好的导电性及导磁性, 随着纳米Fe3O4含量由7.79%增加到35.34%, 复合物的电导率由1.71 S/m下降至0.41 S/m, 复合物的比饱和磁化强度σs则由6.14 A·m2/kg增加到18.11 A· m2/kg, 其矫顽力在0.52~0.73 A/m之间.
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| 关 键 词： | 纳米Fe3O4 聚苯胺 导电 导磁 |
| 文章编号： | 1000-2383(2004)01-0065-04 |
| 收稿时间： | 2003-06-09 |
Preparation and Characterization of Conductive and Magnetic PANI Nano-Composite |
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| CHENG Guo-e,HUANG Kai-xun,KE Han-zhong.Chemistry.Preparation and Characterization of Conductive and Magnetic PANI Nano-Composite[J].Earth Science-Journal of China University of Geosciences,2004,29(1):65-68. |
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| Authors: | CHENG Guo-e HUANG Kai-xun KE Han-zhongChemistry |
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| Institution: | CHENG Guo-e~1,HUANG Kai-xun~1,KE Han-zhong~21.Chemistry Department,Huazhong University of Science and Technology,Wuhan430074,China2.Faculty of Material Science and Chemical Engineering,China University of Geosciences,Wuhan430074,China |
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| Abstract: | The Fe3O4-polyaniline(Fe3O4-PANI)nano-composites are synthesized via an in-situ polymerization of aniline monomer in SDBS-HCl aqueous solutions which contain well-dispersed Fe3O4nanoparticles, SDBS serving as surfactant and dispersant. The composites are characterized by means of XRD, TEM, FT-IR, et al. The results show that competing doping behavior happened between SDBS and HCl during the process of synthesis. The component of the composite is Fe3O4-PANI-DBSA. Fe3O4particlesin it are almost spherical with average size of 13 nm and dispersed in the base of PANI regularly. These composites possess good electrical conductivity and magnetization. With the content of Fe3O4increased from 7.79% to 35.34%, the conductivity of these composites gradually decreases from 1.71 S/m to 0.41 S/m, meanwhile the saturated magnetization(σs)increases from 6.14 A· m2/kg to 18.11 A·m2/kg, and the coercive force(Hc)is within the range of 0.52 A/m-0.73 A/m. |
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| Keywords: | Fe_3O_4 nanoparticles polyaniline conductivity magnetization |
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