SYNTHESIS OF A NEW FAMILY OF COMB POLYMERS WITH SIDE-CHAIN ESTERS ANDIONIC CONDUCTIVITIES OF THEIR FILMS CONTAINING LITHIUM TRIFLUOROMETHANE SULFONATE

A new family of comb polymers with varying lengths of side chains cont aining ester groups have been synthesized, and ionic conductivities of hybrid films of these polymers with lithium trifluoromethanesulfonate (LiCF3SO3) studied as a function of salt concentration and temperatur e. Dielectric relaxation of the host polymers has also been investigat ed to gain an insight into ionic conduction. These polymers are amorph ous and have good compatibility with LiCF3SO3. Ionic conductivities of the hybrid films are found to increase with increasing side-chain len gth, and a few hybrid films exhibit higher conductivities than a linea r polyester, poly(ethylene succinate). The temperature dependence of i onic conductivities is shown to be in accord with that of dielectric r elaxation of host polymers.