Effect of pressure on the structure and dynamics of hydrogen bonds in ethylene glycol–water mixtures: Numerical simulation data


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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.

作者简介

M. Antipova

Krestov Institute of Solution Chemistry

Email: vep@isc-ras.ru
俄罗斯联邦, Ivanovo, 153045

D. Gurina

Krestov Institute of Solution Chemistry

Email: vep@isc-ras.ru
俄罗斯联邦, Ivanovo, 153045

D. Makarov

Krestov Institute of Solution Chemistry

Email: vep@isc-ras.ru
俄罗斯联邦, Ivanovo, 153045

G. Egorov

Krestov Institute of Solution Chemistry

Email: vep@isc-ras.ru
俄罗斯联邦, Ivanovo, 153045

V. Petrenko

Krestov Institute of Solution Chemistry

编辑信件的主要联系方式.
Email: vep@isc-ras.ru
俄罗斯联邦, Ivanovo, 153045

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