MOLECULAR MOBILITY OF POLYSILARYLENES WIT H AROMATIC AMIDE FRAGMENTS

The molecular dynamics of amorphous polysilarylenes with amide groups and aromatic fragments was studied by the dielectric method. The relax ation properties of these polymers were compared to those of previousl y characterized polysilarylenes with ester-aromatic fragments. It is s hown that there are two types of the local molecular mobility in polya mides, which are analogous to those known in the polyesters. The diffe rence of the relaxation times and the activation energies for the dipo le polarization in polysilarylenes with amide and ester groups is caus ed by an additional retardation of the kinetic elements as a result of intermolecular hydrogen bond formation in polyamides.