应用化学 ›› 2009, Vol. 26 ›› Issue (11): 1264-1268.

• 研究论文 • 上一篇    下一篇

聚苯胺/CoC2O4纳米复合物的制备与电磁性质

曹正艳,杨春明*,李海银,向延滨   

  1. (湖南师范大学化学化工学院 长沙 410081)
  • 收稿日期:2008-11-03 修回日期:2009-04-14 出版日期:2009-11-10 发布日期:2009-11-10
  • 通讯作者: 杨春明,男,教授; E-mail:chunmingyang@126.com; 研究方向:功能高分子
  • 作者简介:杨春明,男,教授;Email: chunmingyang@126.com; 研究方向:功能高分子

Preparation and Electromagnetic Properties of PAn/CoC2O4 Nanocomposites

CAO Zheng-Yan, YANG Chun-Ming*, LI Hai-Yin, XIANG Yan-Bin   

  1. (College of Chemistry and Chemical Engineering,Hunan Normal University,Changsha 410081)
  • Received:2008-11-03 Revised:2009-04-14 Published:2009-11-10 Online:2009-11-10
  • Contact: YANG Chun-Ming
  • About author:Yang Chun-Ming, mail, professor; Email: chunmingyang@126.com; Research interest:Functional polymers.

摘要:

采用固相低热合成法制备了纳米草酸钴,再在不同条件下将聚苯胺原位生长在草酸钴表面从而获得兼具导电性和导磁性的聚苯胺/CoC2O4纳米复合物,考察了反应物配比、混合条件、活性剂的种类和数量对产物形貌结构及其电磁性质的影响。通过透射电镜(TEM)、X-射线衍射(XRD)、热重分析(TG)等手段表征了合成产物。结果表明,通过改变纳米CoC2O4与聚苯胺原位生长的复合条件可以有效调控产物的形貌结构及其电磁吸波性能,最佳实验结果为:超声作用下获得的聚苯胺/CoC2O4试样在8.6 GHz 处具有最大的反射损耗( -28.8 dB),大于-10 dB的带宽达3.2 GHz。

关键词: 聚苯胺, 草酸钴, 纳米复合物, 电磁性质

Abstract:

Polyaniline/CoC2O4 nanocomposite with both electrical and magnetic conductivity has been synthesized by using in-situ growth of polyaniline under different conditions on the surface of nano-cobalt oxalate, which was obtained by low heating solid state reaction. The influence of  reaction conditions including reactants ratio, mixing methods, type and quantity of surfactants on the morphology and structure and their electromagnetic properties of resulting composites was investigated. The products were characterized by TEM, XRD, and TG analysis techniques. The results indicate that the morphology and structure and their electromagnetic properties of nanocomposites can be effectively tuned by changing the in-situ complex conditions. The optimal experimental results were as follows: PAn/CoC2O4 nanocomposite obtained under ultrasonication showed a maximum reflection loss of -28.8 dB at 8.6 GHz with a bandwidth of 3.2 GHz above -10 dB loss.

Key words: Polyaniline, cobalt oxalate, nanocomposite, electromagnetic properties

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