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 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.
Fainerman
V B
VB
Medical Physicochemical Centre, Donetsk Medical University, 16 Ilych Avenue, 83003 Donetsk, Ukraine.
Kovalchuk
V I
VI
Lucassen-Reynders
E H
EH
Grigoriev
D O
DO
Ferri
J K
JK
Leser
M E
ME
Michel
M
M
Miller
R
R
Möhwald
H
H
D008567:Membranes, Artificial; D008956:Models, Chemical; D053758:Nanoparticles / Q000737:chemistry*; D011312:Pressure; D013816:Thermodynamics; D014867:Water / Q000737:chemistry
D008567:Membranes, Artificial; D014867:Water