Conduction in Polyaniline-Emeraldine Salt/Bentonite Composites Using Impedance Spectroscopy

Abstract:

In this study, different mass concentrations of Polyaniline-emeraldine salt (PAni-ES) was mixed with bentonite clay. XRD analysis showed the incorporation of PAni-ES in bentonite. The AC conductivity was calculated from Impedance measurements. The conductivities increased with increasing concentration of PAni-ES. The AC conductivities follow a transition from frequency-independent to frequency-dependent at a critical frequency, ω_c. Above ω_c, the conductivity follows a universal power law behavior as described for disordered materials. Using jump relaxation model, the conductivity is governed by translational ion hopping in the low-frequency region, and well-localized ion hopping in the high-frequency region.

• Periodical: Key Engineering Materials (Volume 775)
• Pages: 63-67
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.775.63
• Online since: August 2018
• Authors: Xrijslove B. Meneses*, Audrey S. Rillera, Luigi A. Dahonog, Alvin Karlo Garcia Tapia
• Keywords: Bentonite, Conductivity, Impedance Spectroscopy, Polyaniline

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