Synthesis, Characterization, and Studies of PVA/Co-Doped ZnO Nanocomposite Films

Abstract

Polymer nanocomposites are made up of two or more phases wherein the inorganic particles are dispersed in a polymer matrix. The present article deals with Co-doped ZnO embedded in a polyvinyl alcohol (PVA) matrix using a sol-gel method. The synthesized nanocomposites were structurally characterized using X-ray diffraction (XRD) and the optical properties were studied using photoluminescence and ultraviolet-visible (UV-Vis) spectroscopy. Thermal studies including thermogravimetric analysis (TGA) were conducted to the study stability of the nanocomposites.

Co-doped ZnO–PVA Nanocomposite for EMI Shielding

“…Tensile strength and E-Modulus exalted 1.6 and 5 times, respectively, in comparison with neat polymer. The amplification in the tensile strength was may be due to homogenous dispersion of nanoparticles and their interaction with the hydroxyl groups of the PVA which may in turn increase the crystallinity of the polymer as observed in the XRD of the films depicted in our previous paper [36]. Similar observation was made by Kumar and co-workers [37] that on doping with WO 3 and ZnO, PVA stiffness and strength increased.…”

Polyvinyl alcohol: A review of research status and use of polyvinyl alcohol based nanocomposites

“…Band gap was reduced and thermal stability enhanced. The studies suggested the applications of the prepared nanocomposites in UV shielding, nanophotonic devices, and visible light emitting diodes .…”

“…The effect suggested micropatterning the optical structures into composite films . Kumar et al prepared cobalt doped ZnO loaded PVA nanocomposite films using the sol–gel method. Optical properties of the prepared nanocomposites were studied by ultraviolet visible spectroscopy and photoluminescence, and the thermal properties using thermogravimetric analysis.…”

“…Attempts are being made to fabricate various polymeric nanocomposites and to understand their fundamental principles for their applications in various fields of science and engineering. The structural, optical, mechanical, and electrical properties of polymers can easily be tuned by incorporating small quantities of nanofillers in the polymer matrices . Various types of polymers (like polyethylene, polyvinylidine fluoride, polypropylene, polymethyl methacrylate, polyaniline, polyvinyl chloride, polyamide, polyethylene terephthalate, polystyrene, etc.)…”

Microstructural and Mechanical Studies of PVA Doped with ZnO and WO3 Composites Films

“…Over the past decades, transition metal oxides (TMOs) have been widely investigated for use in applications related to electronic, optical, and mechanical properties. Among these, TMOs, zinc oxide (ZnO), and tungsten oxide (WO 3 ) are promising materials for the various above mentioned applications [10][11][12][13]. When these TMOs are incorporated in polymers, it improves their electrical, mechanical, and optical properties due to their high interfacial interaction between organic moieties and inorganic nanoparticles.…”