Blends of Polyvinyl chloride(PVC)/ Polymethylmethacrylate (PMMA) were prepared with different blend ratios: (%PVC, 75%PVC+25%PMMA, 50%PVC+50%PMMA, 25%PVC+75%PMMA, %PMMA) using casting technique. Research was conducted in several stages related to study the effect of the mixing ratio at addition 0.02% (weight percentage) from Polyaniline (PANI), Lithium Fluoride(LiF), Lithium Carbonate(Li2CO3) on the optical and dielectrical properties.