Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
11006582 | Journal of Molecular Liquids | 2018 | 34 Pages |
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 50â¯wt% of chitosan showed the highest proton conductivity of 1.57â¯Ãâ¯10â2â¯S/cm, which was slightly lower compared to Nafion-117 membrane (8.6â¯Ãâ¯10â2â¯S/cm). The study revealed the blend film with 75â¯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.
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Authors
C.Y. Wong, W.Y. Wong, R. Walvekar, K.S. Loh, M. Khalid, K.L. Lim,