Studies on structural and dielectric behaviour of PVA/PVP/SnO nanocomposites

The hybrid type of polymer nanocomposites based on Polyvinyl alcohol (PVA)/Poly(vinyl) pyrrolidone (PVP) with tin oxide (SnO) have been prepared by simple solution casting method. Powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) have been employed to elucidate the successful incorporation of SnO nanoparticles (NPs) in the PVA/PVP blend matrix. The increase in the crystalinity of the polymer nanocomposites (PNCs) by the addition of SnO nanoparticles concentration up to 3 wt. % of SnO has been confirmed by the PXRD analysis. The FTIR analysis implied the presence of hydrogen bonding interaction between SnO and the PVA/PVP blend matrix. SEM results revealed that SnO nanoparticles were uniformly dispersed in the PVA/PVP blend matrix. From the dielectric properties, it had been observed that 1 wt. % SnO added PNCs showed the high dielectric constant values at lower frequencies. The curves of argand plot at various temperatures were incomplete semicircles indicating the non-Debye behaviour. In modulus analysis, the height of the peak has been decreased by addition of SnO nanoparticles in the polymer matrix which confirms the non-Debye nature.

Automated summary

Hybrid polymer nanocomposites based on PVA/PVP with SnO nanoparticles have been successfully prepared and characterized by XRD, FTIR, and SEM analysis. The addition of SnO nanoparticles increased the crystallinity and hydrogen bonding interaction in the polymer matrix. The high dielectric constant values were observed in PNCs with 1 wt% SnO addition at lower frequencies, with non-Debye behavior confirmed by argand plot and modulus analysis.