Summary
The dependence of the thickness of water films on silicate surfaces upon disjoining pressure was investigated. While observing the flow of films their properties have been studied. The theory of the film flow has been developed, using the disjoining pressure isotherms. It has been established that the structural variations of water play a preponderant role in the stability of thinα-films, and the ionic-electrostatic forces in the stability ofβ-films.
Résumé
L’épaisseur d’une pellicule d’eau à la surface d’un silicate varie en fonction de la pression de déplacement (disjoining pressure). Après avoir étudié cette propriété en observant l’écoulement des pellicules d’eau, les auteurs développent une théorie de cet écoulement en utilisant les isothermes de la pression de déplacement. Ils distinguent des pellicules d’eau de typeα pour la stabilité desquelles les variations de structure de l’eau jouent un rôle prépondérant, et des pellicules de typeβ, métastables, dépendant étroitement des forces ioniques et électrostatiques.
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References
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Derjaguin, B.V., Churaev, N.V. Properties and flow of water films. Bulletin of the International Association of Engineering Geology 11, 37–39 (1975). https://doi.org/10.1007/BF02635449
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DOI: https://doi.org/10.1007/BF02635449