Nanocomposites of polymer gel electrolyte based on poly(ethylene glycol diacrylate) and Mg-Al layered double hydroxides

The present paper describes the synthesis and characterization of nanocomposite materials composed of the polymer gel electrolyte and a layered double hydroxide (LDH) inorganic filter. Mg-Al LDHs were prepared with various ratios of Mg/Al. It was observed that the layered structure of Mg-Al LDH was totally exfoliated by the PEGDA. The ionic conductivity and mechanical strength were highly improved in the nanocomposite systems. In the case of the composite films having 4.5 wt% of the Mg-Al LDH, the ionic conductivity reached 1.6 x 10(-3) S cm(-1) at room temperature. The incorporation of nanoparticles into the gel resulted in a two- or threefold increase in the tensile modulus. (C) 2004 Society of Chemical Industry.