This book reports structural, electrical and mechanical properties of nanocomposite films of PANI/TiO2-PVA composites with varying weight percentages of PANI-TiO2 nanoparticles. The synthesized materials were characterized by using XRD, SEM and FTIR. Electrical properties have been evaluated for nano PANI/TiO2-PVA composites. These properties were observed to be strongly dependent upon applied frequency and PANI-TiO2 filler content. Dielectric constant decreases with increase in frequency and decreases with increase in filler concentration, AC conductivity increases with frequency and...