Surface-pressure isotherms of monolayers formed by microsize and nanosize particles

The thermodynamic model of a 2D solution developed earlier for protein monolayers at liquid interfaces is generalized for monolayers composed of micro- and nanoparticles. Surface pressure isotherms of particle monolayers published in the literature for a wide range of particles sizes (between 75 mic...

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Bibliographic Details
Published in:Langmuir Vol. 22; no. 4; p. 1701
Main Authors: Fainerman, V B, Kovalchuk, V I, Lucassen-Reynders, E H, Grigoriev, D O, Ferri, J K, Leser, M E, Michel, M, Miller, R, Möhwald, H
Format: Journal Article
Language:English
Published: United States 14.02.2006
Subjects:
Membranes, Artificial
Models, Chemical
Nanoparticles - chemistry
Pressure
Thermodynamics
Water - chemistry
ISSN:0743-7463
Online Access:Get more information
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Summary:The thermodynamic model of a 2D solution developed earlier for protein monolayers at liquid interfaces is generalized for monolayers composed of micro- and nanoparticles. Surface pressure isotherms of particle monolayers published in the literature for a wide range of particles sizes (between 75 microm and 7.5 nm) are described by the theoretical model with one modification. The calculations of surface pressure pi on area A provide satisfactory agreement with the experimental data. The theory also yields reasonable cross-sectional area values of the solvent molecule water in the range between 0.12 and 0.18 nm2, which is almost independent of particle size. Also, the area per particle in a closely packed monolayer obtained from the theory is quite realistic.
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ISSN:0743-7463
DOI:10.1021/la052407t