Ternary Mixtures of Hard Spheres and Their Multiple Separated Phases

We study the liquid phase behavior of ternary mixtures of monodisperse hard spheres in solution. The interactions are modeled in terms of the second virial coefficient and can be additive hard sphere (HS) or non-additive hard sphere (NAHS) interactions. We give the set of equations that defines the...

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Main Authors: Luka Sturtewagen, Erik van der Linden
Format: Article
Language:English
Published: MDPI AG 2023-11-01
Series:Molecules
Subjects:
Online Access:https://www.mdpi.com/1420-3049/28/23/7817
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author Luka Sturtewagen
Erik van der Linden
author_facet Luka Sturtewagen
Erik van der Linden
author_sort Luka Sturtewagen
collection DOAJ
description We study the liquid phase behavior of ternary mixtures of monodisperse hard spheres in solution. The interactions are modeled in terms of the second virial coefficient and can be additive hard sphere (HS) or non-additive hard sphere (NAHS) interactions. We give the set of equations that defines the phase diagram for mixtures of three components. We calculate the theoretical liquid–liquid phase separation boundary for two-phase separation (the binodal) and, if applicable, the three-phase boundary, as well as the plait points and the spinodal. The sizes of the three components are fixed. The first component (A) is the smallest one, the second component (B) is four times the size of the smallest component, and the third (C) component is three times the size of the smallest one. The interaction between the first two components is fixed, and this AB sub-mixture shows phase separation. The interactions of component C with the other two components are varied. Component C can be compatible or incompatible with components A and B. Depending on the compatibility of the components, the phase diagram is altered. The addition of the third component has an influence on the phase boundary, plait points, stability region, fractionation, and volume ratio between the different phases. When all sub-mixtures (AB, AC, and BC) show phase separation, a three-phase system becomes possible when the incompatibility among all components is high enough. The position and size of the three-phase region is dependent on the interactions between the different sub-mixtures. We study the fractionation off all components depending on specific parent concentrations.
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spelling doaj.art-f1c73c53617941d691a67d12884a12452023-12-08T15:22:26ZengMDPI AGMolecules1420-30492023-11-012823781710.3390/molecules28237817Ternary Mixtures of Hard Spheres and Their Multiple Separated PhasesLuka Sturtewagen0Erik van der Linden1Laboratory of Physics and Physical Chemistry of Foods, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The NetherlandsLaboratory of Physics and Physical Chemistry of Foods, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The NetherlandsWe study the liquid phase behavior of ternary mixtures of monodisperse hard spheres in solution. The interactions are modeled in terms of the second virial coefficient and can be additive hard sphere (HS) or non-additive hard sphere (NAHS) interactions. We give the set of equations that defines the phase diagram for mixtures of three components. We calculate the theoretical liquid–liquid phase separation boundary for two-phase separation (the binodal) and, if applicable, the three-phase boundary, as well as the plait points and the spinodal. The sizes of the three components are fixed. The first component (A) is the smallest one, the second component (B) is four times the size of the smallest component, and the third (C) component is three times the size of the smallest one. The interaction between the first two components is fixed, and this AB sub-mixture shows phase separation. The interactions of component C with the other two components are varied. Component C can be compatible or incompatible with components A and B. Depending on the compatibility of the components, the phase diagram is altered. The addition of the third component has an influence on the phase boundary, plait points, stability region, fractionation, and volume ratio between the different phases. When all sub-mixtures (AB, AC, and BC) show phase separation, a three-phase system becomes possible when the incompatibility among all components is high enough. The position and size of the three-phase region is dependent on the interactions between the different sub-mixtures. We study the fractionation off all components depending on specific parent concentrations.https://www.mdpi.com/1420-3049/28/23/7817polydispersityhard spheresphase behaviorvirial coefficient
spellingShingle Luka Sturtewagen
Erik van der Linden
Ternary Mixtures of Hard Spheres and Their Multiple Separated Phases
Molecules
polydispersity
hard spheres
phase behavior
virial coefficient
title Ternary Mixtures of Hard Spheres and Their Multiple Separated Phases
title_full Ternary Mixtures of Hard Spheres and Their Multiple Separated Phases
title_fullStr Ternary Mixtures of Hard Spheres and Their Multiple Separated Phases
title_full_unstemmed Ternary Mixtures of Hard Spheres and Their Multiple Separated Phases
title_short Ternary Mixtures of Hard Spheres and Their Multiple Separated Phases
title_sort ternary mixtures of hard spheres and their multiple separated phases
topic polydispersity
hard spheres
phase behavior
virial coefficient
url https://www.mdpi.com/1420-3049/28/23/7817
work_keys_str_mv AT lukasturtewagen ternarymixturesofhardspheresandtheirmultipleseparatedphases
AT erikvanderlinden ternarymixturesofhardspheresandtheirmultipleseparatedphases