Effect of CsBr–MnCl2 Mixed Fillers on the Crystal Structure and Optical and Electrical Properties of Poly(vinyl alcohol)

ABSTRACT: Poly(vinyl alcohol) (PVA) films filled with (x)CsBr(15 x)MnCl2, where 0.0 x 15%, were prepared by a casting technique. The crystal structure properties of the prepared films were examined by XRD, DTA, and FTIR. A correlation between XRD, DTA, and FTIR of the filled polymer was discussed. Optical absorption measurements revealed two optical band gaps (Eg1 and Eg2). The electrical properties were studied using dc electrical conductivity. The filling level (FL) dependency of Eg1 and Eg2, thermal activa-tion energy (E), and hopping distance (R0) are given to illustrate the behavior of the filled polymers. © 2004 Wile