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Vaporization enthalpy, long-term evaporation and evaporation mechanism of polyethylene glycol-based deep eutectic solvents.

Authors :
Chen, Yu
Wang, Qian
Liu, Zhenghui
Li, Zheng
Chen, Wenjun
Zhou, Liyang
Qin, Jiaqing
Meng, Yaxin
Mu, Tiancheng
Source :
New Journal of Chemistry; 6/14/2020, Vol. 44 Issue 22, p9493-9501, 9p
Publication Year :
2020

Abstract

We for the first time have found that PEG-based DESs could volatilize at room temperature and atmospheric pressure. The mass loss from long-term evaporation of PEG-based DESs at 298.15 K for 1000 min could reach as high as 30.5% mass loss, ca. 6 times that of short-term evaporation (5.1% mass loss). Generally, the vaporization enthalpy of PEG-based DESs is found to lie between that of common organic solvents and that of ionic liquids, while some PEG-based DESs could be more volatile than common organic solvents. The evaporation of PEG-based DESs could be ascribed to their volatile constituents; however, the evaporation rate of each constituent is found to be very different. This is the first discovery of the higher volatility of PEG-based DESs at room temperature and atmospheric pressure. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
11440546
Volume :
44
Issue :
22
Database :
Complementary Index
Journal :
New Journal of Chemistry
Publication Type :
Academic Journal
Accession number :
143652157
Full Text :
https://doi.org/10.1039/d0nj01601b