Conduction in polyaniline-emeraldine salt/bentonite composites using impedance spectroscopy

Abstract

© 2018 Trans Tech Publications, Switzerland. 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, ωc. Above ωc, 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.

Source or Periodical Title

Key Engineering Materials

ISSN

10139826

Page

63-67

Document Type

Article

Subject

Bentonite, Conductivity, Impedance spectroscopy, Polyaniline

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