NDLI: Response of an equilibrium film to external disturbances

Content Provider	Royal Society of Chemistry (RSC)
Author	Tempel, M. den Prins, A.
Copyright Year	1970
Abstract	An equilibrium film situated in air saturated with water vapour is subjected to a disturbance consisting of a rapid change of the temperature of the surrounding atmosphere. The resulting large change in film thickness is found to be due to exchange of water between film and atmosphere, and not to expansion or contraction of the film. Pseudo-equilibrium films of widely varying thickness can be formed by means of this process. For a film with a sufficiently large area, the thickness of an element far from the border is determined by the water vapour pressure equilibrium rather than by the disjoining pressure equilibrium. The thickness profile of a large, vertical film in a state of apparent rest is explained on the basis of the different time scales associated with the various equilibrium processes.
Starting Page	20
Ending Page	29
Page Count	10
File Format	PDF
ISSN	03709302
Volume Number	1
Journal	Special Discussions of the Faraday Society
DOI	10.1039/SD9700100020
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Vapor pressure Disjoining pressure
Content Type	Text
Resource Type	Article

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Response of an equilibrium film to external disturbances