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Poly-dispersive Nature of relaxation times Characteristics of Poly-(diamino-naphthalene) doped Poly-(vinyl-alcohol) films from AC impedance analysis

Author Affiliations

  • 1Department of Chemistry, Govt. Auto. Science College, Jabalpur MP, INDIA, Pin- 482001, INDIA
  • 2 Department of Physics, Govt. Auto. Science College, Jabalpur MP, INDIA, Pin- 482001, INDIA
  • 3 Department of Physics, Global Engineering College, Jabalpur MP, INDIA, Pin- 482001, INDIA

Res.J.chem.sci., Volume 4, Issue (8), Pages 82-87, August,18 (2014)

Abstract

The conducting polymer doped inside a macromolecular doped film through chemically oxidative polymerization process, will be a promising field in the material science. This kind of multifunctional conducting materials will also be interesting in terms of biocompatibility, low cost and environmental stability. The alternating current conductivity measurement is an important experimental technique to probe the microscopic images of a highly disordered system and all the studies provided fundamental and technological applications. Polaron defect occurs due to incorporation of conducting polymer inside the synthetic hydrogel, therefore for quantifying and investigating the disordered composites system, use of alternating current conductivity was required. In this paper less known conducting polymer poly-(diamino naphthalene) (PDAN) is doped with poly-(vinyl alcohol) (PVA), is being investigated. The composite films are obtained by chemical-oxidation polymerization method. The experimental PDAN doped PVA films of different weight concentration are being analyzed by AC impedance spectroscope at different temperature and frequency range. The calculated AC conductivities found are 4.65 X 10-6 Scm-1 for 0.591gm and 6.28 X 10-6 Scm-1 for 0.791gm PDAN doped PVA films.The complex impedanceplotsoobtained was semicircular in nature, shows the single AC current mechanism. Again by Cole-Cole impedance plot, the value of parameter "α” so obtained lies between zero and one (i.e. 0.88 and 0.89 for both weight concentration of PDAN doped PVA films), which shows the poly-dispersive nature of relaxation time.

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