Details

Autor(en) / Beteiligte

• Ibrahim, Rusul Khaleel
• Hayyan, Maan
• AlSaadi, Mohammed Abdulhakim
• Ibrahim, Shaliza
• Hayyan, Adeeb
• Hashim, Mohd Ali

Titel

Physical properties of ethylene glycol-based deep eutectic solvents

Ist Teil von

• Journal of molecular liquids, 2019-02, Vol.276, p.794-800

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2019

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. [Display omitted] •Ethylene glycol based deep eutectic solvents (DESs) were prepared from different salts.•The ratios of salt to HBD were selected based on homogeneity and stability of the DES.•The studied DESs showed physical properties similar to that of ionic liquids.•FTIR analysis depicted the existence of new functional groups in DES structure.