POLY[OXYMETHYLENE-OLIGO(OXYETHYLENE)] NETWORK ELECTROLYTES

Poly[oxymethylene-oligo(oxyethylene)]s have been prepared with a propo rtion of the chain units having pendant unsaturated groups. Radical ch emistry was used to crosslink either the polymers alone or mixtures of the polymers with LiClO4. Swelling and tensile measurements were used to determine the extent of crosslinking, and differential scanning ca lorimetry and dynamic mechanical thermal analysis to determine glass t ransition and melting temperatures. Conductivities of network-salt mix tures were measured by ac impedance spectroscopy. The conductivities a nd thermal properties of crosslinked and uncrosslinked materials were essentially identical.