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Ionic Conductivity and Conduction Mechanism Studies of CMC/ Chitosan Biopolymer Blend Electrolytes

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Author Affiliations

  • 1 School of Fundamental Science, Universiti Malaysia Terengganu, 21030 Kuala Terengganu,Terengganu, MALAYSIA
  • 2 Center of Corporate Communication and Image Development, Universiti Malaysia Terengganu, 21030 Kuala Terengganu,Terengganu, MALAYSIA

Res. J. Recent Sci., Volume 3, Issue (11), Pages 50-56, November,2 (2014)

Abstract

The ionic conductivity of carboxymethyl cellulose/chitosan (CMC/CS) electrolyte containing various ammonium bromide (NH4Br) compositions was prepared via solution cast method. The biopolymer blend electrolyte (BBE) films have been measured using Electrical Impedance Spectroscopy. The incorporation of 20 wt.% NH4Br gives the optimum room temperature dc conductivity, σdc of 2.12 x 10-5 Scm-1. Dielectric study shows dependence of BBE films on temperature, but independent to frequency. Based on the power law exponent result, CMC/CS-NH4Br system can be represented by quantum mechanical tunnelling (QMT) model.

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