Journal
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS
Volume 61, Issue 1-4, Pages 30-40Publisher
TAYLOR & FRANCIS AS
DOI: 10.1080/00914037.2011.557810
Keywords
biopolymer electrolyte; electrical properties; small polaron hopping (SPH)
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Biopolymer electrolyte films based on carboxy methylcellulose (CMC) complexed with dodecyltrimethyl ammonium bromide (DTAB) salt with compositions between 5 and 40 wt.% have been prepared using the solution cast method as a possible proton-conducting polymer electrolyte system. The polymer-salt complex formation and the polymer-proton interactions have been analyzed. Electrical properties have been measured as a function of composition and temperature using complex impedance spectroscopy and exhibited the highest room temperature conductivity of 10(-4) Scm(-1). A small polaron hopping (SPH) model has been found to be most appropriate for fitting the experimental conductivity data.
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