Characterization, electrical and magnetic properties of PVA films filled with FeCl3-MnCl2 mixed fillers

Polyvinyl alcohol (PVA) films filled with different filling levels (FLs) of XFeCL3(15-X) MnCl2 were studied. The DSC thermograms exhibited an increase in the melting temperature with. lling, indicating better thermal stability of the filled polymer of interesting industrial applications. The amorphous feature of the filled polymer was depicted using XRD scans. Vibrational studies displayed significant structural deformations. The FL dependence of certain IR absorption peaks was discussed. The dc electrical conduction mechanism was interpreted on the basis of the modified interpolaron hopping model. The present results of the dc magnetic susceptibility (chi) suggested the temperature dependence of Curie-Weiss behavior characterized by localized magnetic moments. The effective paramagnetic moment (mu(eff)) was estimated; its dependence on the FL exhibited a non-linear character. The electron spin resonance (ESR) study revealed unresolved broad distorted signals characterized by the hyperfine structure. The ESR parameters were evaluated. A correlation between the above-mentioned studies was discussed to relate the structural, electrical and magnetic properties of the filled PVA polymer. (C) 2008 Elsevier B.V. All rights reserved.