Long Range Hydration Effects in Electrolytic Free Suspended Black Films
- 6 July 1998
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 81 (1), 160-163
- https://doi.org/10.1103/physrevlett.81.160
Abstract
The force law within free suspended black films made of negatively charged aerosol-OT with added LiCl or CsCl is studied accurately using x-ray reflectivity (ca. 1 Å). We find an electrolyte concentration threshold above which a substantial additional repulsion is detected in the LiCl films, up to distances of 100 Å. We interpret this phenomenon as an augmentation of the Debye screening length, due to the local screening of the condensed hydrophilic counterions by the primary hydration shell.Keywords
All Related Versions
This publication has 18 references indexed in Scilit:
- Boundary Effects in the One-Dimensional Coulomb GasJournal of Statistical Physics, 1998
- Surface Charging Mechanism and Disjoining Pressure of Electrolytic Soap FilmsJournal of Colloid and Interface Science, 1997
- Steric Effects in Electrolytes: A Modified Poisson-Boltzmann EquationPhysical Review Letters, 1997
- Surface charging mechanism for electrolytic soap filmsEurophysics Letters, 1997
- Free-Standing Black Films of Polymers: A Model of Charged Brushes in InteractionPhysical Review Letters, 1995
- Structural properties of soap black films investigated by x-ray reflectivityPhysical Review Letters, 1991
- Direct measurement of disjoining pressure in black foam films II. Films from nonionic surfactantsColloids and Surfaces, 1989
- Direct measurement of disjoining pressure in black foam films. I. Films from an ionic surfactantColloids and Surfaces, 1987
- Double-layer interaction in the primitive model and the corresponding Poisson-Boltzmann descriptionThe Journal of Physical Chemistry, 1986
- Purification and surface tension properties of alkyl sodium sulfosuccinatesJournal of Colloid Science, 1957