China Plastics ›› 2009, Vol. 23 ›› Issue (01): 37-42 .DOI: 10.19491/j.issn.1001-9278.2009.01.008

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Preparation, Characterization and Conductive Properties of Polyaniline Doped with DBSA

GAO Li-min, ZHANG Jin-xia, LI Ning-ning, LU Wei1, ZHANG Li-qun, QU Xiong-wei   

  1. 1.Institute of Polymer Science and Engineering, Hebei University of Technology, Tianjin 300130, China; 2.Tianjin Denso Electronics Company, Tianjin 300457, China; 3.School of Materials Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China
  • Received:2008-09-11 Revised:1900-01-01 Online:2009-01-26 Published:2009-01-26

Abstract: Polyaniline (PANI) is one of the most promising conducting polymers for its high environment stability, tunable electrical properties and relatively low cost. Chemical oxidative polymerization of aniline was performed in micellar solution of dodecylbenzene sulfonic acid (DBSA), using ammonium persulfate (APS) as an oxidant to obtain conductive nanorods. DBSA was used to play double roles of a surfactant and a dopant. The products of PANI doped with DBSA were characterized with FTIR, UV-vis, XRD and SEM. The crystalline morphology was determined by TEM. It was first found that the distance between the crystalline layers was 5.99 Å. The effects of reaction conditions on the conductivity were discussed such as the molar ratio of DBSA to aniline, oxidant to aniline, reaction time, and reaction time. The highest conductivity of PANI doped with DBSA was 0.72 S/cm.

Key words: polyaniline, dodecylbenzene sulfonic acid, crystallizability, conductivity, morphology