Polymer electrolyte films prepared from poly(methyl methacrylate) and LiBF4
with different concentrations of plasticizer (DBP) are described. The form
ation of polymer-salt complex has been confirmed by FTIR spectral studies.
The temperature dependence of conductivity of polymer films seems to obey t
he VTF relation. Values of conductivities of the polymer complexes are pres
ented and discussed.