Journal
JOURNAL OF COLLOID AND INTERFACE SCIENCE
Volume 300, Issue 1, Pages 45-51Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2006.03.025
Keywords
nanocapillarity; adsorption compression; oscillaroty structural force; vapor pressure
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The Kelvin equation for a compressible liquid in nanoconfinement is written in a form that takes into account not only Laplace's pressure, but also the oscillatory compression pressure. This leads to a simple analytical equation for pressure in nanocapillaries. The corrected equation is used to analyze properties of aqueous systems, including the oscillatory structural forces between attractive surfaces and inert surfaces, repulsive hydration forces between hydrophilic surfaces, and attractive hydrophobic forces between hydrophobic surfaces. Relative vapor pressure in a nanocapillary also is discussed. (c) 2006 Elsevier Inc. All rights reserved.
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