Vigilancia Tecnológica

The present work considers the integration of (zirconium carbide (ZrC)—silicon dioxide (SiO2)) nanoparticles into pure polyvinyl alcohol (PVA) at ratios of 0, 2, 4, and 6 wt% by using the casting method to prepare PNc samples. The FTIR spectroscopy studies demonstrated the presence of intermolecular hydrogen bonding between the (ZrC-SiO2) surface and the OH???groups of the PVA. The optical microscope pictures reveal a homogeneous dispersion of ZrC-SiO2 nanoparticles over the polymer film's surface. The nanocomposite films (PNc) are subjected to a comprehensive optical analysis. It Introduced different concentrations of dispersed ZrC-SiO2 into pure PVA results in a progressive reduction in the band gap for indirect allowed transitions in the PNc films. The band gap decreases from 4.49 eV to 3.24 eV, indicating a shift towards semiconductive behavior. The addition of higher concentrations of (ZrC-SiO2) resulted in an expansion of the range of refractive index (1.43–2.83), extinction coefficient (6.28?×?10–5–6.13?×?10–4), real dielectric constant (2.09–7.99), and optical conductivity (6.27?×?1010–1.29?×?1012) in these PNc films. This effect was observed at a fixed wavelength of 400 nm and varied significantly with changes in the wavelength of incident photons. The optical characteristics of PNc films based on PVA-ZrC-SiO2, which may be controlled by adjusting the nanofiller concentration, indicate their potential as versatile optical materials for advanced flexible optoelectronic systems in the future. The AC electrical characteristics of PNc, particularly the dielectric constant and dielectric loss, demonstrate a reduction as the frequency increases. On the other hand, a higher concentration of ZrC-SiO2 nanoparticles leads to an increase of these characteristics. The AC electrical conductivity of the PNc has a positive correlation with the frequency and concentration of ZrC-SiO2 nanoparticles. The PNc that were created were subjected to testing to assess its efficacy in shielding against gamma radiation. The empirical results suggest that the PNc films composed of (PVA-ZrC-SiO2) have noteworthy attenuation coefficients upon exposure to gamma rays. Finally, the results showed that PNc are promising nanostructures and important keys for potential optical and nanoelectronics applications.