Synergistic Effects of TiO ₂ and MWCNT Fillers on the Physicochemical, Optical, and Dielectric Performance of PANI Nanocomposites

The present work deals with the study of structural, physicochemical, and dielectric properties of specifically prepared PANI/TiO 2 (8 wt.%), PANI/MWCNT (8 wt.%) and PANI/TiO 2 (8 wt.%)/MWCNT (8 wt.%) Nanocomposites through In-situ chemical oxidation polymerization of aniline in the presence of ammonium peroxide sulfate (APS) oxidant. The structural and chemical properties of nanocomposite specimens characterized by SEM, XRD, Raman Spectroscopy, and FTIR techniques. Thermogravimetric analyzer (TGA) and Impedance Analyzer experimental set-up were used to determine the weight loss (%) and dielectric properties of the specimens respectively. Their results show that both the properties enhanced more dominantly for PANI/TiO 2 (8 wt.%)/MWCNT (8 wt.%) in comparison to other specimens. UV-Vis spectrophotometer study also reveals that the band gap of PANI/TiO 2 (8 wt.%)/MWCNT (8 wt%) nanocomposite specimens reduced significantly in comparison to other specimens. The study reveals that PANI/TiO 2 (8 wt.%)/MWCNT may be treated as potential material for research and development of energy storage devices and applications.