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电化学(中英文) ›› 1995, Vol. 1 ›› Issue (2): 159-165. 

• 研究论文 • 上一篇    下一篇

磁场对苯胺电聚合的影响

蔡林涛,姚士冰,周绍民   

  1. 厦门大学化学系
  • 收稿日期:1995-05-28 修回日期:1995-05-28 出版日期:1995-05-28 发布日期:1995-05-28

The Effects of Magnetic Field onthe Electropolymerization of Aniline

Cai Lintao; Yao Shibing; Zhou Shaomin   

  1. (Dept. of Chem., Xiamen Univ. , Xiamen 361005
  • Received:1995-05-28 Revised:1995-05-28 Published:1995-05-28 Online:1995-05-28

摘要: 本文研究了外加磁场对苯胺电聚合过程的影响.在H_2SO_4介质中,当磁场方向垂直电极表面时,在0.58T处聚合速度最大,约为无磁场影响下的2倍;当磁场方向平行电极表面时,随磁场强度的增加聚合速度也增大,在0.7T时约为无磁场影响下的2.4倍;膜的成核生长是在动力学控制下的二维瞬时成核过程.此外,在HCl、HClO_4、HBF_4介质中,也观察到磁场的增强现象.

关键词: 导电高分子, 聚苯胺, 电聚合, 成核生长, 磁场效应

Abstract: The aniline electropolyinerization under the magnetic field was studied by cyclicvoltammetry and potentiostatic step techniques. Theinaximum peak current was obtained at 0. 58 Twhen the magnetic flux was perpendicular to the surface of the working electrede in H_2SO_4 solution.These were speculated in terins of magnetic dircctional effect. But when the magneic flux directed inparallcl with the surface of elcctrode, the peak current obviously increased as the magnetic flux densityrised. The results uere explained as the enhancement of mass transfer by magnetohydredynamic(MHD) mechanism. The PAN film growth via a two-dimentional (2-D) instantaneous nucleationunder the electron transfer kinetic controlled. The enhanced effects were also obtained in HCl、 HClO_4、HBF_4 solutions.

Key words: Conducting polymer, Polyaniline, Electropolymerization, Nucleation, Magnetic field effect

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