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Phase diagram of a binary mixture in a closed cavity

Phase diagram of a binary mixture in a closed cavity
Phase diagram of a binary mixture in a closed cavity
Normally, the phase diagram is reported as a property of the binary mixture. We show that the phase diagram (that is, the zones of thermodynamic stability of the states of the binary mixture) is also affected by the size of the container. We investigate the thermodynamic stability of the binary mixture in a closed cavity, and identify the zone in parameters where the binary mixture is heterogeneous in equilibrium (the zone of spinodal decomposition), the zone where the mixture is always homogeneous in equilibrium, and the zone where the transition between these two states is possible (the metastable nucleation zone). In addition, we investigate the properties of the smallest single droplet that may be in equilibrium in the closed cavity (for the given average concentration, all smaller droplets would always dissolve). We show that the size of such droplets depends on the cavity's size, as ∼L 1/2.
phase diagram, binary mixture
Vorobev, A.
911a4e1e-0c34-4297-b52e-c22a2b9dec01
Lyubimov, D.
af90d5a8-78a0-4b6a-9ca7-0c69a14c53e7
Lyubimova, T.
5c021d17-a1c6-49a6-97ce-3ea583eaed4b
Vorobev, A.
911a4e1e-0c34-4297-b52e-c22a2b9dec01
Lyubimov, D.
af90d5a8-78a0-4b6a-9ca7-0c69a14c53e7
Lyubimova, T.
5c021d17-a1c6-49a6-97ce-3ea583eaed4b

Vorobev, A., Lyubimov, D. and Lyubimova, T. (2017) Phase diagram of a binary mixture in a closed cavity. Physical Review E, 95 (2), [022803]. (doi:10.1103/PhysRevE.95.022803).

Record type: Article

Abstract

Normally, the phase diagram is reported as a property of the binary mixture. We show that the phase diagram (that is, the zones of thermodynamic stability of the states of the binary mixture) is also affected by the size of the container. We investigate the thermodynamic stability of the binary mixture in a closed cavity, and identify the zone in parameters where the binary mixture is heterogeneous in equilibrium (the zone of spinodal decomposition), the zone where the mixture is always homogeneous in equilibrium, and the zone where the transition between these two states is possible (the metastable nucleation zone). In addition, we investigate the properties of the smallest single droplet that may be in equilibrium in the closed cavity (for the given average concentration, all smaller droplets would always dissolve). We show that the size of such droplets depends on the cavity's size, as ∼L 1/2.

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More information

Accepted/In Press date: 8 February 2017
e-pub ahead of print date: 8 February 2017
Published date: 2017
Keywords: phase diagram, binary mixture
Organisations: Energy Technology Group, Engineering Science Unit, Faculty of Engineering and the Environment

Identifiers

Local EPrints ID: 405784
URI: http://eprints.soton.ac.uk/id/eprint/405784
PURE UUID: 1dc8bd51-e230-42ae-a21e-09cd29418b24
ORCID for A. Vorobev: ORCID iD orcid.org/0000-0002-6458-9390

Catalogue record

Date deposited: 18 Feb 2017 00:20
Last modified: 07 Oct 2020 01:54

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