N. A. Nikonorova, A. A. Kononov, H. T. Dao, R. A. Castro
Price: 50 руб.
Molecular mobility and charge transport in R-SOD aromatic thermoplastic polyimide was studied by the dielectric method. Dielectric spectra of all PI samples revealed one region of dipole polarization relaxation in the examined temperature and frequency range. The
relaxation process can be linked to local mobility of phenylene rings
in the diamine part of a macromolecule. The frequency dependence of
conductivity was observed in the studied temperature range (s<1.0),
which indicates the existence of a hopping mechanism of charge transport. At least two sections can be distinguished for the temperature dependence of σ’, at a “critical” temperature, the type of the system conductivity changes from dielectric to conductive state.
Keywords: molecular mobility, hopping charge transport, dielectric spectroscopy,
aromatic polyimide.
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