Effect of pressure on the structure and dynamics of hydrogen bonds in ethylene glycol–water mixtures: Numerical simulation data
- Авторы: Antipova M.1, Gurina D.1, Makarov D.1, Egorov G.1, Petrenko V.1
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Учреждения:
- Krestov Institute of Solution Chemistry
- Выпуск: Том 90, № 3 (2016)
- Страницы: 560-566
- Раздел: Physical Chemistry of Solutions
- URL: https://journals.rcsi.science/0036-0244/article/view/167868
- DOI: https://doi.org/10.1134/S003602441603002X
- ID: 167868
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Аннотация
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.
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Об авторах
M. Antipova
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Россия, Ivanovo, 153045
D. Gurina
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Россия, Ivanovo, 153045
D. Makarov
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Россия, Ivanovo, 153045
G. Egorov
Krestov Institute of Solution Chemistry
Email: vep@isc-ras.ru
Россия, Ivanovo, 153045
V. Petrenko
Krestov Institute of Solution Chemistry
Автор, ответственный за переписку.
Email: vep@isc-ras.ru
Россия, Ivanovo, 153045