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

C. Y. Wong, W. Y. Wong, R. Walvekar, Kee Shyuan Loh, M. Khalid, Kean Long Lim

Research output: Contribution to journalArticle

2 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)675-683
Number of pages9
JournalJournal of Molecular Liquids
Volume269
DOIs
Publication statusPublished - 1 Nov 2018

Fingerprint

Chitosan
eutectics
Eutectics
Protons
Proton conductivity
membranes
Membranes
conduction
protons
Carboxymethylcellulose Sodium
conductivity
choline
Disintegration
disintegration
Choline
ureas
Urea
swelling
Electrolytes
Swelling

Keywords

  • Chitosan-CMC biocomposite
  • Deep eutectic solvent (DES)
  • Fuel cell
  • Polymer electrolyte membrane (PEM)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Materials Chemistry

Cite this

Effect of deep eutectic solvent in proton conduction and thermal behaviour of chitosan-based membrane. / Wong, C. Y.; Wong, W. Y.; Walvekar, R.; Loh, Kee Shyuan; Khalid, M.; Lim, Kean Long.

In: Journal of Molecular Liquids, Vol. 269, 01.11.2018, p. 675-683.

Research output: Contribution to journalArticle

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AU - Khalid, M.

AU - Lim, Kean Long

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