Foam drainage on the microscale II. Imaging flow through single Plateau borders

S. A. Koehler; S. Hilgenfeldt; E. R. Weeks; H. A. Stone

doi:10.1016/j.jcis.2003.12.060

Foam drainage on the microscale II. Imaging flow through single Plateau borders

S. A. Koehler, S. Hilgenfeldt, E. R. Weeks, H. A. Stone

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

83 Scopus citations

Abstract

The liquid in foam forms an interconnected network, which is composed of Plateau borders, nodes, and films. One of the dominant pathways for foam drainage is flow through Plateau borders, and we use confocal microscopy to obtain experimental results for the flow fields inside individual Plateau borders. For three types of surfactants detailed comparisons are made with a model based upon the influence of surface viscosity at free boundaries between the gas in the bubbles and the liquid in the Plateau borders. The model describes the flows well, and we find good agreement between the surface viscosity predicted by this model and representative values found in the literature. We also give a qualitative description of the flow in the nodes.

Original language	English (US)
Pages (from-to)	439-449
Number of pages	11
Journal	Journal of Colloid And Interface Science
Volume	276
Issue number	2
DOIs	https://doi.org/10.1016/j.jcis.2003.12.060
State	Published - Aug 15 2004
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Surfaces, Coatings and Films
Biomaterials
Colloid and Surface Chemistry

Keywords

Emulsions
Foams
Surface rheology

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10.1016/j.jcis.2003.12.060

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abstract = "The liquid in foam forms an interconnected network, which is composed of Plateau borders, nodes, and films. One of the dominant pathways for foam drainage is flow through Plateau borders, and we use confocal microscopy to obtain experimental results for the flow fields inside individual Plateau borders. For three types of surfactants detailed comparisons are made with a model based upon the influence of surface viscosity at free boundaries between the gas in the bubbles and the liquid in the Plateau borders. The model describes the flows well, and we find good agreement between the surface viscosity predicted by this model and representative values found in the literature. We also give a qualitative description of the flow in the nodes.",

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AU - Weeks, E. R.

AU - Stone, H. A.

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AB - The liquid in foam forms an interconnected network, which is composed of Plateau borders, nodes, and films. One of the dominant pathways for foam drainage is flow through Plateau borders, and we use confocal microscopy to obtain experimental results for the flow fields inside individual Plateau borders. For three types of surfactants detailed comparisons are made with a model based upon the influence of surface viscosity at free boundaries between the gas in the bubbles and the liquid in the Plateau borders. The model describes the flows well, and we find good agreement between the surface viscosity predicted by this model and representative values found in the literature. We also give a qualitative description of the flow in the nodes.

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KW - Surface rheology

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Foam drainage on the microscale II. Imaging flow through single Plateau borders

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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