Effect of composition on the dielectric relaxation of zeolite-conducting polyaniline blends

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The complex permittivity of conducting polyaniline and zeolite - polyaniline blends was measured in the frequency range 0.01 to 2000000 Hz from room temperature to liquid nitrogen temperature. A loss peak is detected for 25, 35 and 50 wt % zeolite blends. Its position in the frequency domain, activation energy and intensity is a function of composition. The experimental results are interpreted through the competing multiple role of zeolite: as being less conducting than polyaniline, it impedes the electric charge flow by dividing large conducting polyaniline regions into smaller pieces, subsequently provides short-range pathways and, moreover, enriches the blend in interfaces separating zeolite from polyaniline.
Accepted for publication in J. Appl. Phys

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Disordered Systems and Neural Networks, Materials Science

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http://salesiana.dossiersoluciones.com/handle/123456789/225126

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0903.1498
 http://arxiv.org/abs/0903.1498
 J. Appl. Phys. 105, 064109 (2009)
 doi:10.1063/1.3097772

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arXiv