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Title: Experimental studies on the applicability of the Kelvin Equation to highly curved concave menisci

Abstract

The problem of the applicability of the Kelvin Equation to capillary condensation was clarified. Direct measurements were made of the capillary condensation of the simple organic liquids, cyclohexane and n-hexane, between crossed cylinders of molecularly smooth mica. By repeating the experiment at a series of relative vapor pressures, an experimental relationship between radius of curvature and vapor pressures was established and could be compared with the Kelvin Equation predictions. For instance, the Kelvin Equation is obeyed by cyclohexane menisci with mean radius of curvature as low as 4 nm. However, even small amounts of contaminants can cause a significant increase in the equilibrium value of the radius of curvature. 98 references.

Authors:
;
Publication Date:
OSTI Identifier:
6324296
Resource Type:
Journal Article
Journal Name:
J. Colloid Interface Sci.; (United States)
Additional Journal Information:
Journal Volume: 80:2
Country of Publication:
United States
Language:
English
Subject:
02 PETROLEUM; CYCLOHEXANE; INTERFACES; EQUATIONS; MICA; REFRACTION; SORPTION; THIN FILMS; USES; VAPOR CONDENSATION; VAPOR PRESSURE; WAVE PROPAGATION; WETTABILITY; ALKANES; CYCLOALKANES; FILMS; HYDROCARBONS; ORGANIC COMPOUNDS; PHYSICAL PROPERTIES; THERMODYNAMIC PROPERTIES; 020300* - Petroleum- Drilling & Production

Citation Formats

Fisher, L R, and Israelachvili, J N. Experimental studies on the applicability of the Kelvin Equation to highly curved concave menisci. United States: N. p., 1981. Web. doi:10.1016/0021-9797(81)90212-5.
Fisher, L R, & Israelachvili, J N. Experimental studies on the applicability of the Kelvin Equation to highly curved concave menisci. United States. https://doi.org/10.1016/0021-9797(81)90212-5
Fisher, L R, and Israelachvili, J N. Wed . "Experimental studies on the applicability of the Kelvin Equation to highly curved concave menisci". United States. https://doi.org/10.1016/0021-9797(81)90212-5.
@article{osti_6324296,
title = {Experimental studies on the applicability of the Kelvin Equation to highly curved concave menisci},
author = {Fisher, L R and Israelachvili, J N},
abstractNote = {The problem of the applicability of the Kelvin Equation to capillary condensation was clarified. Direct measurements were made of the capillary condensation of the simple organic liquids, cyclohexane and n-hexane, between crossed cylinders of molecularly smooth mica. By repeating the experiment at a series of relative vapor pressures, an experimental relationship between radius of curvature and vapor pressures was established and could be compared with the Kelvin Equation predictions. For instance, the Kelvin Equation is obeyed by cyclohexane menisci with mean radius of curvature as low as 4 nm. However, even small amounts of contaminants can cause a significant increase in the equilibrium value of the radius of curvature. 98 references.},
doi = {10.1016/0021-9797(81)90212-5},
url = {https://www.osti.gov/biblio/6324296}, journal = {J. Colloid Interface Sci.; (United States)},
number = ,
volume = 80:2,
place = {United States},
year = {1981},
month = {4}
}