LrgpV1, Main, Exploration, bibRecord, 001471

Modeling of the linear viscoelastic properties of oil-in-water emulsions

Identifieur interne : 001471 ( Main/Exploration ); précédent : 001470; suivant : 001472

Modeling of the linear viscoelastic properties of oil-in-water emulsions

Auteurs : Sylvie Dagreou [France] ; Bruno Mendiboure [France] ; Ahmed Allal [France] ; Gérard Marin [France] ; Jean Lachaise [France] ; Philippe Marchal [France] ; Lionel Choplin [France]

Source :

Journal of colloid and interface science [ 0021-9797 ] ; 2005.

RBID : Pascal:05-0164549

Descripteurs français

Pascal (Inist)
- Modélisation, Viscoélasticité, Emulsion huile eau, Rhéologie, Modèle statistique, Elasticité.

English descriptors

KwdEn :
- Elasticity, Modeling, Oil water emulsion, Rheology, Statistical model, Viscoelasticity.

Abstract

The aim of this work is to use a recently developed statistical model of dispersions with nonhydrodynamic interactions to describe the linear viscoelastic properties of emulsions of Newtonian liquids. None of the existing models can describe the rheological behavior of such systems, particularly the elastic properties, in the linear regime. We first present the results of numerical simulations of our model applied to emulsions. We show that taking nonhydrodynamic interactions into account allows to predict that emulsions of two purely viscous liquids have a complex viscoelastic behavior. We then compare the model to experimental results on oil/water emulsions, stabilized with ionic and nonionic surfactants. We find out that our statistical mechanical approach gives a much better description of the viscoelastic behavior of these samples than purely hydrodynamic models do. However, the elasticity observed is underestimated by our model. We indicate further theoretical developments which could improve the description of the viscoelastic properties of emulsions.

Affiliations:

France
Aquitaine, Grand Est, Lorraine (région), Nouvelle-Aquitaine
Nancy, Pau

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 000663
to stream PascalFrancis, to step Curation: 000448
to stream PascalFrancis, to step Checkpoint: 000568
to stream Main, to step Merge: 001704
to stream Main, to step Curation: 001471

Le document en format XML

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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Elasticity</term>
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<front><div type="abstract" xml:lang="en">The aim of this work is to use a recently developed statistical model of dispersions with nonhydrodynamic interactions to describe the linear viscoelastic properties of emulsions of Newtonian liquids. None of the existing models can describe the rheological behavior of such systems, particularly the elastic properties, in the linear regime. We first present the results of numerical simulations of our model applied to emulsions. We show that taking nonhydrodynamic interactions into account allows to predict that emulsions of two purely viscous liquids have a complex viscoelastic behavior. We then compare the model to experimental results on oil/water emulsions, stabilized with ionic and nonionic surfactants. We find out that our statistical mechanical approach gives a much better description of the viscoelastic behavior of these samples than purely hydrodynamic models do. However, the elasticity observed is underestimated by our model. We indicate further theoretical developments which could improve the description of the viscoelastic properties of emulsions.</div>
</front>
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<name sortKey="Choplin, Lionel" sort="Choplin, Lionel" uniqKey="Choplin L" first="Lionel" last="Choplin">Lionel Choplin</name>
<name sortKey="Lachaise, Jean" sort="Lachaise, Jean" uniqKey="Lachaise J" first="Jean" last="Lachaise">Jean Lachaise</name>
<name sortKey="Marchal, Philippe" sort="Marchal, Philippe" uniqKey="Marchal P" first="Philippe" last="Marchal">Philippe Marchal</name>
<name sortKey="Marin, Gerard" sort="Marin, Gerard" uniqKey="Marin G" first="Gérard" last="Marin">Gérard Marin</name>
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Modeling of the linear viscoelastic properties of oil-in-water emulsions

Modeling of the linear viscoelastic properties of oil-in-water emulsions

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri