Doped polyaniline (PANI) was obtained by the polymerization of aniline, using chemical oxidative polymerization in the presence of ammonium peroxydisulfate [(NH4) 2S2O8]. The doped PANI was dedoped by ammonia solution. The electrospinning method was applied to solutions involving PANI–PVA, PANI–PVA–AgNO3, where PVA=poly (vinyl alcohol) and PANI=polyaniline. Micro to nanofibers were obtained in the cases of PANI–PVA and PANI–PVA–AgNO3. The SEM technique was used to investigate the morphology of the accumulated fibers or particles on the Al surface collector.Thermal analysis performed on PANI–PVA composite fibers indicated an endothermic peak at 280–420oC, accompanied by 90% weight loss. The presence of Ag in the case of Ag containing composite fibers was confirmed by EDAX.

This study involved the preparation of novel ternary PANI/rGO-Cr2O3, PANI/rGO-NiO, PANI/NiO-Cr2O3 nanocompsites using in-situ polymerization method. The resulting nanocomposites were identified using FT-IR, XRD, and FESEM measurements. The electrical properties of single PVA polymer films and PVA hybrids were studied by LCR techniques at frequency range of 1kHz -5kHz and a temperature of 25 οC. The measurements of electrical conductivity exhibited an augmentation in the magnitudes of the dielectric constant (ɛ’) and the dielectric loss factor (ε′′). The value decreases as the frequency increases. The thermal measurements showed that the thermal conductivity coefficient decreases with increasing the frequencies.

In this research work, montmorillonite/polyaniline/chitosan/platinum (MMT/PANI/CS/Pt) nanocomposite is used as an effective and novel catalyst for electrooxidation of ethanol. The glassy carbon electrode surface is coated with MMT/PANI and chitosan by applying a constant potential. Thereafter, the surface of the GCE is potentiostatically coated with platinum nanoparticles. The constructed electrode is referred to as: GCE/MMT/PANI/CS/Pt. The electrooxidation of ethanol molecules on the surface of MMT/PANI/CS/Pt electrode is studied using various electrochemical methods such as cyclic voltammetry, chronoamperometry and electrochemical impedance spectroscopy (EIS). The experimental results, indicate that the GCE/MMT/PANI/CS/Pt electrode possess a higher catalytic activity for ethanol electrooxidation compared to the GCE/Pt electrode. The Tafel plots indicate a better kinetic for ethanol electrooxidation in the presence of MMT/PANI/CS. The effect of various parameters on electrocatalytic oxidation of the ethanol molecules, such as the amount of platinum nanoparticles, MMT/PANI and ethanol concentration on the modified electrodes is investigated for electrooxidation of ethanol molecules using the GCE/MMT/PANI/CS/Pt electrode. The optimum conditions are obtained with 0. 011 mg cm-2 Pt nanoparticle, 0. 08 w/v% MMT/PANI and 1 M ethanol.