Compatibility and conductivity of LiClO₄ free and doped polyacrylate – poly(ethylene oxide) blends

Abstract

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°C of PAc, PAc/PEO 40 : 60 doped with 15 wt-% LiClO4 and PEO are 8·3 × 10–10, 1·2 × 10–6 and 7·9 × 10–6 S cm–1 respectively. Reasonably high conductivity of the PAc/PEO/LiClO4 blends makes it a potential polymer electrolyte.