Creep and drainage in the fast destabilization of emulsions

The destabilization of emulsions is important for many applications but remains incompletely understood. We perform squeeze flow measurements on oil-in-water emulsions, finding that the spontaneous destabilization of emulsions is generally very slow under normal conditions, with a characteristic tim...

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Veröffentlicht in:	Physics of fluids (1994) 2021-03, Vol.33 (3)
Hauptverfasser:	Dekker, Riande I., Deblais, Antoine, Veltkamp, Bastiaan, Veenstra, Peter, Kegel, Willem K., Bonn, Daniel
Format:	Artikel
Sprache:	eng
Schlagworte:	Coalescing Destabilization Drainage Emulsions Fluid dynamics Physics
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container_title	Physics of fluids (1994)
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creator	Dekker, Riande I. Deblais, Antoine Veltkamp, Bastiaan Veenstra, Peter Kegel, Willem K. Bonn, Daniel
description	The destabilization of emulsions is important for many applications but remains incompletely understood. We perform squeeze flow measurements on oil-in-water emulsions, finding that the spontaneous destabilization of emulsions is generally very slow under normal conditions, with a characteristic time scale given by the drainage of the continuous phase and the coalescence of the dispersed phase. We show that if the emulsion is compressed between two plates, the destabilization can be sped up significantly; on the one hand, the drainage is faster due to the application of the squeezing force. On the other hand, creep processes lead to rearrangements that also contribute to the destabilization.
doi_str_mv	10.1063/5.0039097
format	Article
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source	AIP Journals Complete; Alma/SFX Local Collection
subjects	Coalescing Destabilization Drainage Emulsions Fluid dynamics Physics
title	Creep and drainage in the fast destabilization of emulsions
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