Development of Thermal and Electrical Properties of Poly(vinyl alcohol)/ Poly(ethylene glycol) Based on solid Electrolyte and Nanocomposite

Abstract

Polymer Nano composites and lithium polymer electrolytes are always scientifically speaking. It is formed by dissolving Multiwalled carbon nanotubes(MWNT) and lithium salt in poly(ethylene glycol), poly(vinyl alcohol) blends with the aim of developing new types of polymer composite characterized by enhanced thermal stability, as well as by improved electrical properties. The interaction of the MWNT and LiNO3 with the polymer blend were confirmed by a Fourier transform infrared (FTIR) spectroscopy study. The thermal properties of the polymer blend with the MWNT were carried out by means of differential scanning calorimetry (DSC). It is evident from DSC that the polymer/MWNT had a decreased of Tm and heat crystalline fusion(∆Hc) with of increased MWNT. Scanning electron microscopy is used to study the dispersion of the MWNT and LiNO3 in the polymer blend. Electrical conductivity was observed for PVA/PEG/MWNT containing 0.40 wt % MWNT was 7.98 X10-7S/cm where the PVA/PEG was 8.31 X10-8S/cm also electrical conductivity of PVA/PEG/LiNO3 containing 40wt % was 1.02 X10-7S/cm. Relative changes in the conductivity of blends with different concentrations and temperatures are analyzed.