Polyvinyl alcohol (PVA)/potassium chromate (K 2 CrO 4 ) composite films were prepared by solution casting technique using distilled water as a solvent and further investigated using Fourier transform infrared spectroscopy (FTIR), UV-visible spectroscopy X-ray diffraction (XRD), thermogravimetric analysis (TGA), optical microscopy, scanning electron microscopy (SEM) and dielectric measurements. Microscopic studies reveal that K2CrO4 was homogenously mixed with PVA matrix due to interfacial interaction between PVA and K2CrO4. The composite films show very high dielectric constant and relatively low dielectric loss. Hence, such composite materials with improved dielectric properties can be useful for fabrication of electrical charge storage device.

No abstract