An ultrasonic assisted process for the synthesis of poly(vinyl alcohol)-poly(N-vinyl-2-pyrrolidone) nanocomposites filled with modified nano-Zirconia
Abstract
Equal weight ratio of PVA/PVP blends solutions filled with several amounts of modified Zirconia (ZrO2) nanoparticles (NPs) via thiamine (Th) up to 7 wt% were prepared under ultrasound irradiation with casting/solvent evaporation method in the form of films. Existence of functional groups in the coating layer structure associated with the samples was confirmed by Fourier transform infrared spectroscopy analysis. Ultraviolet-visible absorption was enhanced by employing of ZrO2 NPs as effectual filler in NCs. Microscopic observations revealed that NPs have proper compatibility with the PVA and PVP matrices and uniformly dispersed into the their matrices. The reduction in contact angle was observed with increasing the amount of ZrO2-Th. Thermal gravimetric analysis results showed that the thermal resistance of NCs was higher than the pristine PVA-PVP blend. Finally, antibacterial test results showed that all the NCs don’t show any antibacterial activity. Due to the presence of PVA and PVP in the NCs, they could be biocompatible as well as biodegradable.