DIELECTRIC CHARACTERISTICS OF POLYANILINE BLENDS. COMPARISON OF DIFFERENT METHODS.

Main attention of the contribution is devoted to polyaniline-poly(vinyl alcohol) cryogels and to the dependence of their dielectric characteristics on temperature and history (ageing, desorption), especially to non-Arrhenius behaviour around freezing point. Results obtained using standard contact methods (mainly broadband frequency analyser Novocontrol Alpha in frequency range 10–10 Hz) were compared with data obtained by developed contactless resonance method based on evaluation of eddy currents in samples exposed to changing magnetic field.