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Publication Citation: Microwave Dielectric Characterization of Polyaniline Composites

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Author(s): Jan Obrzut; C. K. Chiang;
Title: Microwave Dielectric Characterization of Polyaniline Composites
Published: January 01, 2000
Abstract: 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.
Citation: Proceedings of the MRS Symposium
Volume: 73(5)
Keywords: microwave dielectric permittivity;polyaniline;polymer composites
Research Areas: Nanostructured Materials
PDF version: PDF Document Click here to retrieve PDF version of paper (69KB)