The thick films of pure PVDF and PVDF-La 0.7 Sr 0.3 MnO 3 nanocomposite on Aluminum substrates are synthesized by dip coating technique. The synthesized films are studied for their structural, thermal, morphological and dielectric properties along with the ac conductivity studies. The enhanced dielectric constant and ac conductivity are analyzed with respect to Maxwell-Wagner mechanism induced interfacial polarization. © 2015 AIP Publishing LLC.