Response surface method (RSM) was used to obtain a quantitative relationship between selected electrospinning parameters (namely voltage, solution concentration and PVdF composition) and ionic conductivity of PAN/PVdF polymer electrolyte. Importance of parameters in the model was determined by analysis of variance (ANOVA). Produced membranes show uniform morphology with an average nanofibers diameter of 116-379 nm, high porosity of 48-90% and electrolyte uptake of 303-493%. The electrolyte membranes show good ionic conductivity in the range of 10-3 S cm-1 at ambient temperature. It was concluded that ionic conductivity tended to decrease with solution concentration and increase with PVdF composition. Voltage had no significant effect on ionic conductivity of the membranes. The model predicted the maximum ionic conductivity of 7.98516 mS cm-1 when the voltage was set at 21.57 kV, the solution concentration set at 14.02 wt% and the PVdF composition set at 69.48 wt%.