Ionic conductivity of lithium gel polymer electrolyte based poly (methyl methacrylate) grafted natural rubber ( MG49) / Nur Sabirah Ahmad

MG49 is a natural rubber grafted with 49% poly (methyl methacrylate).Gel polymer electrolytes containing MG49- Li2CO3 -EC were prepared by solution cast technique. Alternating current electrochemical impedances spectroscopy was employed to investigate the ionic conductivity of the electrolytes film at 27°C and the analysis showed that the addition of EC plasticizer has increased the ionic conductivity up to 5.84 x 10-8 S/cm. The polymer-salt complexes were investigated using Fourier Transformed Infrared Spectroscopy to study the interactions between lithium ions and MG49 polymer host. The representation of infrared spectra of pure MG49 and MG49-salt complexes with various concentrations of salted can be observed that when lithium carbonate was added to MG49,.Vibrational spectra data reveals that symmetrical carbonyl group (C=0) in MG49 - salt stretch at 1727.45 cm-1.