Molecular mobility in polymers with aromatic mesogenic groups in their side chains

Abstract

The dielectric relaxation parameters of two polymers of the methacrylic series having pendant mesogenic groups of the phenylbenzoate class have been investigated in the audible frequency range at temperatures below the glass transition. In studies of these polymers in the bulk state, several relaxation processes involving dipole polarization have been observed; these can be related to the mobility of various kinetic units in the pendant group. A study of the intramolecular mobility of the polymers in solution has shown that there is structural order in the positioning of the side groups.