Synthesis and characterization of polysiloxane containing oligo(oxyethylene) sulfate salt

Solvent-free polymeric alkali-metal ion conductors, consisting of a comb-li ke polysiloxane with oligo(oxyethylene) side chains and pendant sulfate gro ups were synthesized by the hydrosilylation of allyl oligo(oxyethylene) sul fate salt and allyl methoxy oligo(oxyethylene) with poly(methylhydrosiloxan e). The factors influncing the ionic conductivity of the resulting polymer such as the electrolyte content and the nature of the alkali-metal were inv estigated. The temperature dependence of conductivity was determined, and t he ionic conductivity of the polymer follows the Vogel-Tammann-Fulcher (VTF ) equation.