Abstract
In this work an attempt has been made to enhance the ionic conductivity of P(EO) 10LiClO 4 using amorphous poly(vinyl acetate) (PVAc) as additives. Impedance measurements have shown that the concentration dependence of the ionic conductivity undergoes a maximum ( σ=10 −5 S cm −1) at 5–15 mol.% PVAc at 25°C. Small PVAc additives, located in amorphous regions between the lamellae within spherulite and increased of the surface layer disordering, reduce the overall poly(ethylene oxide) (PEO)-crystallisation rate and decrease the melting temperature of the PEO-spherulites. The retaining of a high degree of crystalline phase PEO-salt dispersity promotes the increase in the ionic conductivity.
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