Effect of deep eutectic solvent in proton conduction and thermal behaviour of chitosan-based membrane

Wong, C. Y. and Wong, W. Y. and Walvekar, Rashmi and Loh, K. S. and Khalid, Mohammad * and Lim, K. L. (2018) Effect of deep eutectic solvent in proton conduction and thermal behaviour of chitosan-based membrane. Journal of Molecular Liquids, 269. pp. 675-683. ISSN 0167-7322

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Official URL: http://doi.org/10.1016/j.molliq.2018.08.102

Abstract

This work aims to study the effect of choline chloride (ChCl) and urea based deep eutectic solvent (DES) on the proton conduction and thermal properties of chitosan-carboxymethylcellulose (Chitosan-CMC) membrane. Chitosan-CMC biocomposites were prepared in different ratios of 5:95, 10:90, 25:75, 50:50 and 75:25 with DES and was characterised. This study showed a positive improvement the proton conductivity without excessive swelling using DES in comparison with those without DES, with a slight trade-off on the thermal stability. The sample corresponding to 50 wt% of chitosan showed the highest proton conductivity of 1.57 × 10−2 S/cm, which was slightly lower compared to Nafion-117 membrane (8.6 × 10−2 S/cm). The study revealed the blend film with 75 wt% of chitosan with the presence of DES has a potential for polymer electrolyte membrane (PEM) with a low but sufficient water uptake of 49.4% to avoid structural disintegration despite a lower proton conductivity obtained.

Item Type: Article
Uncontrolled Keywords: veep eutectic solvent (DES); hitosan-CMC biocomposite; polymer electrolyte membrane (PEM); fuel cell
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Others > Non Sunway Academics
Sunway University > School of Science and Technology > Research Centre for Nano-Materials and Energy Technology
Depositing User: Dr Janaki Sinnasamy
Related URLs:
Date Deposited: 10 Dec 2018 05:35
Last Modified: 25 Apr 2019 07:44
URI: http://eprints.sunway.edu.my/id/eprint/969

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