Preparation and Characterization of PVC/PMMA Blend Polymer Electrolytes Complexed with LiN(C2F5SO2)2
Elizabeth, R. Nimma; Kalyanasundaram, S.; Gopalan, A.; Saito, Y.; Stephan, A. Manuel
http://dx.doi.org/10.1590/S0104-14282004000100006
Polímeros: Ciência e Tecnologia, vol.14, n1, p.1-7, 2004
Abstract
Thin films of polymer blend electrolytes comprising Poly(vinyl chloride) (PVC) and Poly(methyl methacrylate)(PMMA) and plasticized with a combination of ethylene carbonate (EC) and propylene carbonate (PC) for different lithium imide salt, LiN(C2F5SO2)2 , concentrations were prepared using the solution casting technique. The films were subjected to a. c. impedance measurements as a function of temperature ranging from -30 °C to 70 °C. The variation of ionic conductivity as a function of temperature and PVC content in the blend was analysed. The role of PMMA in the phenomena occurring at the interface between the plasticized polymer electrolyte and lithium electrode was also studied. The cast films were also subjected to TG/DTA and FT-IR studies which are discussed.
Keywords
Polymer electrolyte, plasticizer, Arrhenius plot, lithium-polymer interface
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