Conductivity, structure, and thermal properties of chitosan-based polymer electrolytes with nanofillers

Aziz, N.A. and Majid, Siti Rohana and Yahya, R. and Arof, Abdul Kariem (2011) Conductivity, structure, and thermal properties of chitosan-based polymer electrolytes with nanofillers. Polymers for Advanced Technologies, 22 (9). pp. 1345-1348. ISSN 1042-7147, DOI

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This paper focus on the effect of nanosize (<50 nm BET) inorganic alumina (Al2O3) filler on the structural, conductivity, and thermal properties of chitosan-based polymer electrolytes. Films of chitosan and its complexes were prepared using solution-casting technique. Different amounts of Al2O3 viz., 3, 4.5, 6, 7.5, 9, 12, and 15 wt% were added to the highest room temperature conducting sample in the chitosan-salt system, i.e. sample containing 60 wt% chitosan-40 wt% NH4SCN. The conductivity value of the sample is 1.29x10(-4) S cm(-1). On addition of 6 wt% Al2O3 filler the ionic conductivity increased to 5.86x10(-4) S cm(-1). The amide and amino peaks in the spectrum of chitosan at 1636 and 1551 cm(-1), respectively, shift to lower wavenumbers on addition of salt. The glass transition temperature T-g for the highest conducting composite is 190 degrees C. The increase in T-g with increase in more than 6 wt% filler content is attributed to the increase in degree of crystallinity as proven from X-ray diffraction studies. Copyright (C) 2009 John Wiley & Sons, Ltd.

Item Type: Article
Additional Information: Department of Physics, Faculty of Science Building, University of Malaya, 50603 Kuala Lumpur, MALAYSIA
Uncontrolled Keywords: Ionic conductivity; ceramic fillers; polymer-nanocomposite; chitosan; ionic-conductivity; solid electrolytes; batteries; behavior; blends; films; pyrrolidone; temperature; transport; sio2
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Miss Malisa Diana
Date Deposited: 22 Jul 2013 01:43
Last Modified: 14 Nov 2019 07:13

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