Modification of the Optical and Dielectric Characteristics of PVA/CMC/NiMoO₄/TMAI Blends by Adding Carbon Nanoparticles

Abstract

Our research described in this manuscript seeked to develop innovative blended polymer film composites by incorporating NiMoO₄/tetramethylammonium iodide (TMAI)/carbon nanoparticles (CNP) in polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC) blended polymers. These films were intended to be utilized in a variety of electrical and optical applications. The optical, dielectric, and structural properties of the PVA/CMC/NiMoO₄/TMAI/x wt% CNP blended polymers were analyzed for varying values of x. The structures of the filler and the different blends were studied using the X-ray diffraction technique. The morphologies of doped blends were investigated using a scanning electron microscope facility. The effects of doping on the linear and nonlinear optical parameters of the host blends were explored. Doped blended polymers with x = 0.3 exhibited the smallest optical band gap values, with the direct band gap = 4.01 eV and the indirect band gap = 3.08 eV. The optical losses (optical conductivity, surface energy loss function (SELF), volume energy loss function (VELF) and effect of the skin depth) of the different blends were determined. The fluorescence spectra exhibited a drop in intensities when the pure blend was doped with the NiMoO₄/TMAI/x wt% CNP. The enhancement in the nonlinear optical parameters of the doped blends upon loading with NiMoO₄/TMAI/x wt% CNP suggests the produced blends could be employed in many communication and switching applications. The chromaticity diagram revealed that all blends exhibit varying levels of blue-violet colors. The doped blend with pure NiMoO₄ exhibited the highest dielectric constant values. Doped blends with x = 0, 0.1, 0.2, and 0.3 had the highest capacitance. The achieved results demonstrated that the PVA/CMC/NiMoO₄/TMAI/x wt% CNP blended polymers are promising materials to utilize in numerous applications, such as photocatalytic, optoelectronic and energy storage capacitor applications.

Keywords:

• dielectric
• linear/nonlinear optical parameters
• PVA/CMC/NiMoO₄/TMAI/x wt% CNP

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by Researchers Supporting Project number (RSP2024R72), King Saud University, Riyadh, Saudi Arabia.