Investigations on the Effect of DMAc and DMF as Plasticizers onto Conductivity of PMMA Based Polymer Electrolyte Membrane

Polymethylmatacrylate (PMMA) is a lightweight thermoplastic polymer host having 96% amorphous content at 25°C. It can absorb much electrolyte leading to Increase its conductivity in order to use as gel polymer electrolyte membrane. To this end, in the present study gel polymer electrolyte membranes containing PMMA, lithium perchlorete (LiClO4) and two different plasticizers dimethylformamide (DMF) and dimethylacetmide (DMAc) were prepared by solution casting method. The comparison between ionic conductivity and morphology of these electrolytes has been studied by electrochemical impedance spectroscopy (EIS) and scanning electron microscopy (SEM). It was observed that polymer electrolyte which prepared with DMAc has smoother surface and shows higher conductivity (30% increment)

Keywords:

Polymer membrane- Gel Polymer Electrolyte- Polymethylmetacrylate- Plasticizer , Conductivity