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Microwave Dielectric Characterization of Polyaniline Composites



Jan Obrzut, C. K. Chiang


Dielectric permittivity of polyaniline (emerdaline salt) and its dispersions in epoxy glasses have been investigated in the frequency rangebetween 1 GHz to 18 GHz by using the reflection - transmission method. The observed high value of the dielectric constant is attributed to polarizability originating from a delayed charge transfer between conducting domains with an apparent relaxation at about 6.8 GHz. Incomposites in which this interaction is ceased by a nonconducting phase boundary the microwave dielectric polarizability becomes reminiscent of localized states in organic solids.
Proceedings of the MRS Symposium


microwave dielectric permittivity, polyaniline, polymer composites


Obrzut, J. and Chiang, C. (2000), Microwave Dielectric Characterization of Polyaniline Composites, Proceedings of the MRS Symposium, [online], (Accessed March 1, 2024)
Created January 1, 2000, Updated February 19, 2017