V.V.Shilov, V.V.Shevchenko, P.Pissis*,
A.Kyritsis*, Yu.P.Gomza, S.D.Nesin, N.S.Klimenko
Received September 25, 1998
polyurethanes containing acidic (or ionic) groups in their flexible (polyether)
segments have been synthesized. Morphology and frequency dependences of
their conductivity and dielectric relaxation properties have been studied.
The acid-containing polyurethane exhibit homogeheous morphology and a high
level of protonic conductivity. The corresponding ion-containing polymer
with ionic groups aggregated into multiplets is characterized by a less
amount of the charge carriers and a lower conductivity level. It has been
shown that in both acid- and ion-containing polyurethanes two relaxation
processes take place (the conductivity relaxation and the segmental one),
characterized by an essential difference in their activation energy values.
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