Study of polymers with various chemical structures and chain architectures by thermally stimulated currents and broadband dielectric spectroscopy

The origin of polarization phenomena occurring in amorphous polymers has been investigated, using dielectric dynamic spectroscopy and thermo stimulated current analysis. Linear polymers, e.g. poly(methyl methacrylates) and poly(ethyl methacrylates), show a molecular mobility which is increasingly delocalised along the backbone with increasing temperature. Dendrimers with a phosphorus core and increasingly complex radial branches showed a hierarchy of molecular mobility as a function of generation.