Drainage of emulsion and foam films in Scheludko cells

Coons, J. E., Halley, P. J., McGlashan, S. A. and Tran-Cong, T. (2004). Drainage of emulsion and foam films in Scheludko cells. In: Michèle Vignes-Adler, Colloids and Surfaces A: A collection of papers presented at the 5th European Conference on Foams, Emulsions, and Applications, EUFOAM 2004. EUFOAM 2004: 5th European Conference on Foams, Emulsions and Applications, Champs-sur-Marne, France, (1-4). 5-8th July 2004.


Author Coons, J. E.
Halley, P. J.
McGlashan, S. A.
Tran-Cong, T.
Title of paper Drainage of emulsion and foam films in Scheludko cells
Conference name EUFOAM 2004: 5th European Conference on Foams, Emulsions and Applications
Conference location Champs-sur-Marne, France
Conference dates 5-8th July 2004
Proceedings title Colloids and Surfaces A: A collection of papers presented at the 5th European Conference on Foams, Emulsions, and Applications, EUFOAM 2004   Check publisher's open access policy
Place of Publication Amsterdam, Netherlands
Publisher Elsevier BV
Publication Year 2004
Sub-type Oral presentation
ISSN 0927-7757
1873-4359
Editor Michèle Vignes-Adler
Volume 263
Issue 1-3
Start page 1
End page 4
Total pages 4
Language eng
Formatted Abstract/Summary
Thin liquid films (TLFs) are fundamental components in a variety of industriel processes including foam manufacturing, oil exploration, and the growth of bio-organisms. Improved understanding of the drainage is essential for accurate predictions of the stability and lifetime of a film. Numerous fundamental studies of thin films have been conducted in specially designed capillary cells, referred to as Scheludko cells, in which a biconcave foam or emulsion film is created by suspension of a thin film across the capillary. A foam film is surrounded by a gas and an emulsion film is surrounded by an immiscible liquid. The capillary tube is permeable to permit the drainage and thinning of the film. Coupled with optical probes, the film thickness can be measured with high precision. In this paper, predictions of drainage times from the lubrication theory of Reynolds and the theory of Manev-Tsekov-Radoev, referred to as the MTR theory, are compared to expérimental measurements obtained from numerous investigators. The objective of the comparison is to determine the extent to which drainage theory is consistent with the body of thin film measurements. MTR theory is represented with the original equation derived by Manev et al and a semi-empirical equation recently described by Coons et al. It is shown that the semi-empirical MTR equation is most consistent with available data, and the Reynolds equation and theoretical MTR equation provide effective upper and lower bounds of drainage times, respectively.
Subjects EX
291401 Polymers
670705 Plastic products (incl. construction materials)
Q-Index Code EX
Additional Notes Oral presentation, not published in the proceedings of conference.

 
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Created: Thu, 23 Aug 2007, 20:04:50 EST