• Electric current arising from unpolarized polyvinyl formal

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      http://www.ias.ac.in/article/fulltext/boms/023/05/0419-0423

    • Keywords

       

      Electric current; open circuit voltage; water activated phenomenon; plasticization effect.

    • Abstract

       

      An appreciable electric current is observed in a system consisting of a polyvinyl formal (PVF) film in a sandwich configuration, in the temperature range 30–110°C. The maximum value of the current during first heating is found to be of the order of 10–10 A and its thermograms exhibit one transition (i.e. current peak) at around 60°C. The position of the current peak in thermal spectrum shifts with the heating rate. A temperature dependence of the open circuit voltage is also observed. The activation energy of the process responsible for the current is determined. The magnitude of the current is more in the case of dissimilar electrode systems. It is proposed that the electric current arising from unpolarized metal–polymer–metal system is a water activated phenomenon, which is influenced by the transitional changes of the polymer.

    • Author Affiliations

       

      P K Khare1 P L Jain2 R K Pandey3

      1. Department of Postgraduate Studies and Research in Physics and Electronics, Rani Durgavati University, Jabalpur 482 001, India
      2. Department of Physics, Government P.G. College, Damoh 470 661, India
      3. Department of Physics, Dr H.S. Gour University, Sagar 470 002, India
    • Dates

       
  • Bulletin of Materials Science | News

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