Abstract
The synthesis and examination of optical, conductivity and dielectric properties of the CMC/PEO-LiCl/TiO2 polymer nanocomposite is presented in this study for the first time. The polymer films were characterized using different techniques. XRD revealed that the amorphous phase of the polymer film increased with increasing LiCl/TiO2 concentration up to films containing 15 wt% of LiCl/TiO2. The complexation or interaction between the LiCl/TiO2 nanofiller and the functional groups of the CMC/PEO mixture through coordination bond/hydrogen bond was affirmed by FTIR analysis. For CMC/PEO-LiCl/TiO2 nanocomposite, optical absorption as scanned by UV–visible spectrometer exhibits increased intensity and a blue shifted to longer wavelength. The nanocomposites films CMC/PEO-LiCl/TiO2 had a lower bandgap energy than pure CMC/PEO, and a 15 wt% of LiCl/TiO2 nanofiller was recorded to reach the lowest bandgap energy. In the frequency range of 0.1 Hz - 20 MHz, the synergistic effects of LiCl/TiO2 on the ac conductivity, dielectric permittivity, and electric modulus of CMC/PEO blend have been identified. Pure CMC/PEO had a conductivity of 4.14 × 10−9 S/cm; the electrical conductivity of CMC/PEO-15%LiCl/TiO2 nanocomposites was 1.48 × 10−6 S/cm. These results confirmed that there are significant changes on the manufactured films, which open the road for using the CMC/PEO-LiCl/TiO2 nanocomposites samples as flexible samples for a wide range of potential applications such as batteries, microelectronic devices, and energy storage devices.
•LiCl/TiO2 inorganic nanofillers was synthesized.•Nanocomposites films of CMC/PEO-LiCl/TiO2 were successfully prepared by casting method.•The XRD pattern of CMC/PEO films showed that there was a decrease in amorphous behavior with increasing LiCl/TiO2 content.•The optical properties of the prepared films were determined.•The nanocomposites film of CMC/PEO containing 15 wt% of LiCl/TiO2 has the maximum ionic conductivity and dielectric properties.