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Pis'ma v Zh. Èksper. Teoret. Fiz., 2018, Volume 108, Issue 2, Pages 93–96 (Mi jetpl5624)  

CONDENSED MATTER

On the diffuse structure of the toluene-water interface

A. M. Tikhonovab

a Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow region, Russia
b Kapitza Institute for Physical Problems, Russian Academy of Sciences, Moscow, Russia

Abstract: The electric density profile along the normal to the phase interface between aromatic hydrocarbon toluene and water has been studied by X-ray reflectometry using synchrotron radiation. According to the experimental data, the width of the interface under normal conditions is (3.9 $\pm$ 0.1) Å. This value is much larger than a theoretical value of (5.7 $\pm$ 0.2) Å predicted by the theory of capillary waves with an interphase tension of (36.0 $\pm$ 0.1) mN/m. The observed broadening of the interface is attributed to its own diffuse near-surface structure with a width no less than Å, which is about the value previously discussed for (high-molecular-weight saturated hydrocarbon-water) and (1,2-dichloroethane-water) interfaces.

Funding Agency Grant Number
Russian Science Foundation 18-12-00108
U.S. Department of Energy DE-AC02-98CH10886


DOI: https://doi.org/10.1134/S0370274X18140047

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English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 108:2, 102–105

Bibliographic databases:

Document Type: Article
Received: 04.06.2018

Citation: A. M. Tikhonov, “On the diffuse structure of the toluene-water interface”, Pis'ma v Zh. Èksper. Teoret. Fiz., 108:2 (2018), 93–96; JETP Letters, 108:2 (2018), 102–105

Citation in format AMSBIB
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\paper On the diffuse structure of the toluene-water interface
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2018
\vol 108
\issue 2
\pages 93--96
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\crossref{https://doi.org/10.1134/S0370274X18140047}
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\jour JETP Letters
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\vol 108
\issue 2
\pages 102--105
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