Abstract: Using the intrinsic polyaniline and two doped polyanilines as the determined samples prepared in the laboratory, the conductivities were measured by single sweep voltametric method on the potentiostat with two electrodes. The contact electric resistance was influenced by the pressure between the electrode and sample during the measurement, which could be ignored when the pressure was greater than 0.5 MPa. The measured conductivities of the polyaniline samples are 5.92×10^-5, 1.52×10^-2 and 2.68×10^-1 S/cm respectively. The results show that the electric conductivity of the doped polyaniline increased greatly. The voltametric method is not only simple and convenient, but also suitable for the conductivity measurement of semiconductors. 

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摘要： 　以实验室合成的本征态和两种掺杂改性的聚苯胺为待测试样, 采用恒电位仪的两电极测量体系, 利用单扫伏安法测定了聚苯胺的电导率。在测定时, 电极与试片间的压力影响接触电阻, 当压力为0 .5 MPa 时该电阻可忽略。实验测得3 种聚苯胺的电导率分别为5 .92 ×10 ^-5 、1 .52×10^-2 、2 .68×10^-1 S/cm , 说明掺杂改性聚苯胺的电导率有很大的提高。单扫伏安法方法不仅简便, 而且适合于测定半导体的电导率

关键词: 聚苯胺 , 掺杂态 , 伏安法 , 电导率