Physical properties of ethylene glycol-based deep eutectic solvents

Ibrahim, Rusul Khaleel and Hayyan, Maan and AlSaadi, Mohammed Abdulhakim and Ibrahim, Shaliza and Hayyan, Adeeb and Hashim, Mohd Ali (2019) Physical properties of ethylene glycol-based deep eutectic solvents. Journal of Molecular Liquids, 276. pp. 794-800. ISSN 0167-7322

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Official URL: https://doi.org/10.1016/j.molliq.2018.12.032

Abstract

Deep eutectic solvents (DESs) have been widely recognized as ionic liquids (ILs) analogues due to their low production cost and superior favorable properties over conventional ILs. Studying the physical properties of these solvents will contribute to design processes involving DESs. In this study, five DESs have been successfully prepared using ethylene glycol (EG) as hydrogen bond donor (HBD) with N,N‑diethylethanolammonium chloride (DAC), benzyltriphenylphosphonium chloride (BTPC), choline chloride (ChCl), methyltriphenylphosphonium bromide (MTPB) and tetra‑n‑butylammonium bromide (TBAB) as salts. The freezing point of each of the five studied DESs was measured using Differential Scanning Calorimetry (DSC) and the DES functional groups were identified using the Fourier transform infrared (FTIR) spectroscopy. Moreover, the viscosity, density, electrical conductivity and surface tension were measured at a temperature range of 293.15–353.15 K and they were highly affected by the variation of the temperature. It is worth mentioning that the studied DESs showed many physical characteristics similar to that of ILs, which boost their possibilities to be employed in interdisciplinary domains.

Item Type: Article
Uncontrolled Keywords: Eutectic mixtures; Ionic liquid; Green solvent; Green engineering; Choline chloride; Nanotechnology
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Nanotechnology & Catalysis Research Centre
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 18 Jan 2019 02:27
Last Modified: 18 Jan 2019 02:27
URI: http://eprints.um.edu.my/id/eprint/20065

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