A comb polymer with oligo-oxyethylene side chains of the type -（CH2CH2O）12CH3was prepared from methyl vinyl ether/maleic anhydride copolymer and poly （ethyleneglycol） methyl ether. The polymer can dissolve LiClO4 salt to form homogeneous amor-phous polymer electrolyte. The ac ion conduction was measured using the complex impedancemethod, and conductivities were investigated as functions of temperatures and salt con-centration. The complexes were first found to have two classes of glass transition whichincrease with increasing salt content. The optimum conductivity attained at 25℃ is inthe order of 5.50×10-6Scm-1. IR spectroscopy was used to study the cation-polymerinteraction.
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