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Temperature Dependence of AC Electrical Conductivity of PVA-PPy-FeCl3 Composite Polymer Films , Iskandar Shahrim Mustafa2 and Muhd Ahmad Ali Omer2

Mohd Hamzah Harun, and Elias Saion, and Anuar Kassim, and Muhd Yousuf Hussain, and Iskandar Shahrim Mustafa, and Muhd Ahmad Ali Omer, (2008) Temperature Dependence of AC Electrical Conductivity of PVA-PPy-FeCl3 Composite Polymer Films , Iskandar Shahrim Mustafa2 and Muhd Ahmad Ali Omer2. Malaysian Polymer Journal, 3 (2). pp. 24-31. ISSN 18237789

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Affiliations

Malaysian Nuclear Agency
Universiti Putra Malaysia. Faculty of Science. Dept. of Physics
Universiti Putra Malaysia. Faculty of Science. Dept. of Chemistry
Universiti Putra Malaysia. Faculty of Science. Dept. of Physics
Universiti Putra Malaysia. Faculty of Science. Dept. of Physics
Universiti Putra Malaysia. Faculty of Science. Dept. of Physics

Abstract

The alternate current (ac) electrical conductivity of poly(vinyl alcohol)- polypyrrole-ferric chloride (PVA-PPy-FeCl3) composite films has been investigated at different temperatures at a frequency ranging from 20 Hz to 1 MHz. The electrical conductivity of the composite increased with increasing temperature and it obeys power law Aωs in which s in the range 0.3<s<0.7. Impedance spectroscopy analysis showed that the electrical conductivity is driven by a single conduction mechanism with a perfect of a single semicircle obtained for every sample. The direct current (dc) electrical conductivity increases with increasing temperature and would be attributed to high mobility of free charges (namely polarons and free ions) at higher temperature.

Item Type:Journal
Additional Information:The authors would like to thank all the research fellows involved in this project especially from Faculty of Science, Universiti Putra Malaysia and Malaysian Nuclear Agency. The special appreciation is dedicated to Ministry of Science, Technology and Innovation (MOSTI) for their financial support.
Keywords:temperature dependence, ac and conductivity, PVA-PPy-FeCl3 composite film
Subjects:Q Science, Computer Science
T Technology, Engineering
ID Code:6172

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