THE STRUCTURE AND ELECTRICAL PROPERTIES IN POLYMER-LAYERED SILICATE NANOCOMPOSITES

<正> The polymer-layered silicate nanocom-posites(PLSN) are prepared by the polymer melt interca lation in layered silicate. By the analyses of XRD, DSC, IR, NMR and AC impedance measurements etc, the experimental results show that polymer (PEO) can intercalate into the silicate interlayer in melt state, which leads to the addition of the repeated distance of silicate. The polymer (PEO) structure in the interlayer is similar to that oj PEO melt. The polymer(PMMA) can sol utilize in melt PEC) and intercalate into silicate interlayer with PEO chains together. The modification of PMMA in PLSN further enhances the random arrangement of PEO chains, which are much inclined to random amorphous state. This random amor phous state is beneficial to the ionic migraton in the interlayer. The intercalation of polymer (PEO) and modifi-cation of PEO with PMMA can remarkably enhance the ionic conductivities at room temperature and decrease the apparent conducting activation energies in PLSN.