中国塑料

中国塑料 ›› 2013, Vol. 27 ›› Issue (05): 44-48 .DOI: 10.19491/j.issn.1001-9278.2013.05.009

• 材料与性能 • 上一篇    下一篇

高导电聚苯胺/多壁碳纳米管复合材料的制备与电性能研究

何征 齐暑华 张欣欣 邱华 史金铃   

  1. 西北工业大学 西北工业大学 西北工业大学理学院应用化学系 西北工业大学理学院应用化学系
  • 收稿日期:2013-01-23 修回日期:1900-01-01 出版日期:2013-05-26 发布日期:2013-05-26

Study on Preparation of Polyaniline/Multiwalled Carbon Nanotube Composites and Its Electrical Properties

  

  • Received:2013-01-23 Revised:1900-01-01 Online:2013-05-26 Published:2013-05-26

摘要： 采用混酸处理法对多壁碳纳米管（MWCNTs）进行表面处理， 通过原位聚合法，以过硫酸铵为氧化剂，制备高导电聚苯胺(PANI)/MWCNTs复合材料。采用透射电子显微镜、傅里叶变换红外光谱仪 、紫外可见分光光度计以及X射线衍射仪对MWCNTs和复合材料进行表面观察、结构测定与性能表征；使用两探针法测量复合材料的电性能，并通过平均电场理论和逾渗阈理论进行理论分析。结果表明，MWCNTs的直径约为60~100 nm，长度约为几十微米，酸化后MWCNTs表面引入大量—OH和—COOH；随着MWCNTs含量增加，导电PAM/MWCNTs复合材料的电导率增加，渗滤阈值的理论值为2.36 %。

关键词: 聚苯胺, 多壁碳纳米管, 电导率, 渗滤阈值

Abstract: Multiwalled carbon nanotubes (MWCNTs) were surface treated with an acid mixed, in which aniline was insitu polymerized forming conductive compositeswith ammonium persulfate as an oxidant. The morphology and performance of the composites were characterized using transmission electron microscope, Fourier transform infrared spectroscopy, UVvisible spectrophotometer, and Xray diffraction. The electrical properties of the composites were measured using twoprobe method and analyzed with mean field theory and a percolation threshold value of 2.36 % was observed. The diameter of the MWCNTs was 60~100 nm, and the length was about a few tens of micron. On the surface of MWCNTs a large number of —OH and —COOH groups were formed.

Key words: polyaniline, multi-walled carbon nanotubes, conductivity, percolation threshold

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