Synthesis of the SWCNTS/TiO2 Nanostructure and Its Effect on the Thermal, Optical, and Conductivity Properties of the CMC/PEO as Application of Low Energy Density Devices

Abstract

\n The TiO2 NPs synthesized by sol-gel method and the SWCNTs/TiO2 nanostructure fabricated by a simple mixing technique. By a solution casting process, pure CMC/PEO and SWCNTs/TiO2 nanohybrid doped CMC/PEO polymer blend films are prepared. It discussed the influence of polymer blend and MWCNTs/TiO2 nanohybrid loading on the properties of physical of the polymer blend. The XRD pattern shows that the average crystallite size of the nanoparticles for TiO2 and SWCNTs/TiO2 is 20 nm and 15 nm, respectively, and an increase in amorphicity was observed with an increase in doping. The interaction of CMC/PEO chains and SWCNTs/TiO2 nanohybrid is confirmed by FTIR spectra. The optical absorption spectrum shows that the energy gap reduces with the dopant increase. The miscibility between the CMC and PEO is demonstrated by DSC thermograms. An Enhancement in the thermal stability of the prepared samples with an increase in content of dopant is seen in the TGA analysis. The maximum value of the blend s AC conductivity is 4.77 10-5 S/m, and by increasing the loading of SWCNTs/TiO2 to 4.8 (wt.%) increased to 8.07 10-4 S/m. The conduction mechanism changed with SWCNTs/TiO2 loading from the correlated barrier hopping, in the blend, to the large Polaron tunneling. Usage of these nanocomposite films in the semiconductor industry is encouraged by the observed improvements in optical, thermal, and AC conductivity.