Effect of pressure on the structure and dynamics of hydrogen bonds in ethylene glycol–water mixtures: Numerical simulation data
- Authors: Antipova M.L.1, Gurina D.L.1, Makarov D.M.1, Egorov G.I.1, Petrenko V.E.1
-
Affiliations:
- Krestov Institute of Solution Chemistry
- Issue: Vol 90, No 3 (2016)
- Pages: 560-566
- Section: Physical Chemistry of Solutions
- URL: https://journals.rcsi.science/0036-0244/article/view/167868
- DOI: https://doi.org/10.1134/S003602441603002X
- ID: 167868
Cite item
Abstract
Water−ethylene glycol mixtures containing from 0.002 to 0.998 mole fractions of ethylene glycol at T = 298.15 K and P = 0.1 and 100 MPa are simulated by means of classical molecular dynamics. Such structural and dynamic characteristics of hydrogen bonds as the average number and lifetime, along with the distribution of molecules over the number of hydrogen bonds, are calculated; their changes are analyzed, depending on the mixture’s composition and pressure. It is shown that the components are characterized by a high degree of interpenetration and form a uniform infinite hydrogen-bonded cluster over the range of concentrations. It is found that the higher the concentration of ethylene glycol, the greater the stability of all hydrogen bonds. It is concluded that an increase in pressure lowers the number of hydrogen bonds, while the average lifetime of the remaining hydrogen bonds grows.
Keywords
About the authors
M. L. Antipova
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Russian Federation, Ivanovo, 153045
D. L. Gurina
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Russian Federation, Ivanovo, 153045
D. M. Makarov
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Russian Federation, Ivanovo, 153045
G. I. Egorov
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Russian Federation, Ivanovo, 153045
V. E. Petrenko
Krestov Institute of Solution Chemistry
Author for correspondence.
Email: vep@isc-ras.ru
Russian Federation, Ivanovo, 153045