Compatibility and conductivity of LiClO4 free and doped polyacrylate-poly(ethyleneoxide) blends

Thermal behaviour of polyacrylate (PAc)/poly(ethylene oxide) (PEO) and PAc/PEO doped with LiClO4 were investigated by differential scanning calorimetry. The constituents, PAc and PEO, show immiscibility after glass transition temperature T-g analysis. The addition of LiClO4 increases the T-g's of neat PAc, PEO and their blends. The conductivities at 30 degrees C of PAc, PAc/PEO 40 : 60 doped with 15 wt-% LiClO4 and PEO are 8.3 x 10(-10), 1.2 x 10(-6) and 7.9 x 10(-6) S cm(-1) respectively. Reasonably high conductivity of the PAc/PEO/LiClO4 blends makes it a potential polymer electrolyte.