Marangoni effects in aqueous polypropylene glycol foams

Marangoni effects in aqueous polypropylene glycol foams

The foam behavior of three polypropylene glycols covering the molecular weight range between 192 and 725 g/mol has been examined. Static and dynamic surface tension data, as well as bubble size distribution and retention time in the foam, were incorporated into a simple model of foam stability. The...

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Veröffentlicht in:Journal of colloid and interface science 2005-06, Vol.286 (2), p.719-729
Hauptverfasser: Tan, Su Nee, Fornasiero, Daniel, Sedev, Rossen, Ralston, John
Format: Artikel
Sprache:eng
Schlagworte:
Bubble size
Chemistry
Colloidal state and disperse state
Dynamic surface tension
Emulsions. Microemulsions. Foams
Exact sciences and technology
Foamability
Foams
General and physical chemistry
Marangoni effect
Surface tension difference
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container_issue 2
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container_title Journal of colloid and interface science
container_volume 286
creator Tan, Su Nee
Fornasiero, Daniel
Sedev, Rossen
Ralston, John
description The foam behavior of three polypropylene glycols covering the molecular weight range between 192 and 725 g/mol has been examined. Static and dynamic surface tension data, as well as bubble size distribution and retention time in the foam, were incorporated into a simple model of foam stability. The latter clearly indicates that surface tension differences between the plateau border and lamellar region adjacent to the bubble surface are the dominant factor in controlling foamability, causing liquid flow in the direction opposite to liquid drainage, a process termed the Marangoni effect.
doi_str_mv 10.1016/j.jcis.2005.01.028
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subjects Bubble size
Chemistry
Colloidal state and disperse state
Dynamic surface tension
Emulsions. Microemulsions. Foams
Exact sciences and technology
Foamability
Foams
General and physical chemistry
Marangoni effect
Surface tension difference
title Marangoni effects in aqueous polypropylene glycol foams
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