Polythermal Study of Electrophysical Characteristics
of Poly(vinyl alcohol) PolymerSalt Films

A. A. Ostroushko and M. Yu. Sennikov

Ural State University (Research Institute for Physics and Applied Mathematics), Yekaterinburg, Russia

Received September 27, 2007

Abstract—Dielectric constant, dielectric loss tangent, and electrical conductivity were studied as functions of
temperature for poly(vinyl alcohol) (PVA) films doped with ammonium metavanadate or polyoxometalate
Mo132: (NH₄)₄₂[O₃₇₂(HCOO)₃₀(H₂O)₇₂]30HCOONH₄ · 250H₂O. The electrophysical characteristics
were measured and analyzed as dependent on the concentration and nature of the salt component and ambient
humidity. The conductivity of polymer–salt compositions as a function of salt component concentration has a
maximum, which is typical of electrolyte solutions. A conductivity mechanism was suggested: electron con-
ductivity due to radical species at relatively low temperatures and proton conductivity at higher temperatures.
Inflections on the electrical conductivity versus temperature and other property plots are due to removal of
water from the compositions and thermal destruction.

DOI: 10.1134/S0036023609010185

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