Stability of macroemulsions

Randy D. Hazlett; Robert S. Schechter

doi:10.1016/0166-6622(88)80171-9

Stability of macroemulsions

Randy D. Hazlett, Robert S. Schechter

Research output: Contribution to journal › Article › peer-review

44 Citations (Scopus)

Abstract

The rupture of the thin films separating emulsion droplets has long been considered to be triggered by the long-range, attractive van der Waals forces; however, this study conducted in a shearfield coalescer shows that systems containing surfactant may, in some cases, yield trends contrary to predictions based on this hypothesis. These trends can be understood in terms of a new mechanism leading to film rupture which is called here percolation-enhanced coalescence. Those regimes in which this new mechanism dominates can be determined based on simple equilibrium phase behavior studies of the surfactant, oil, and water mixtures using the percolation model proposed here.

Original language	English
Pages (from-to)	53-69
Number of pages	17
Journal	Colloids and Surfaces
Volume	29
Issue number	1
DOIs	https://doi.org/10.1016/0166-6622(88)80171-9
Publication status	Published - 1988
Externally published	Yes

Funding

This researchw as supported by a grant from the National Science Foundation, Grant No CPE-7813315. Dr Schechter holds the Getty Oil Company Centennial Chair in Petroleum Engineering.

ASJC Scopus subject areas

General Engineering

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10.1016/0166-6622(88)80171-9

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abstract = "The rupture of the thin films separating emulsion droplets has long been considered to be triggered by the long-range, attractive van der Waals forces; however, this study conducted in a shearfield coalescer shows that systems containing surfactant may, in some cases, yield trends contrary to predictions based on this hypothesis. These trends can be understood in terms of a new mechanism leading to film rupture which is called here percolation-enhanced coalescence. Those regimes in which this new mechanism dominates can be determined based on simple equilibrium phase behavior studies of the surfactant, oil, and water mixtures using the percolation model proposed here.",

author = "Hazlett, \{Randy D.\} and Schechter, \{Robert S.\}",

note = "Funding Information: This researchw as supported by a grant from the National Science Foundation, Grant No CPE-7813315. Dr Schechter holds the Getty Oil Company Centennial Chair in Petroleum Engineering.",

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Y1 - 1988

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AB - The rupture of the thin films separating emulsion droplets has long been considered to be triggered by the long-range, attractive van der Waals forces; however, this study conducted in a shearfield coalescer shows that systems containing surfactant may, in some cases, yield trends contrary to predictions based on this hypothesis. These trends can be understood in terms of a new mechanism leading to film rupture which is called here percolation-enhanced coalescence. Those regimes in which this new mechanism dominates can be determined based on simple equilibrium phase behavior studies of the surfactant, oil, and water mixtures using the percolation model proposed here.

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Stability of macroemulsions

Abstract

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ASJC Scopus subject areas

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