| Title | Stability of Thin Aqueous Films on Solid Surfaces, Part I: Ellipsometric Measurement of Disjoining Pressure Isotherms for Aqueous Films Bounded by Glass and Mercury |
| Publication Type | Journal Article |
| Year of Publication | 1992 |
| Authors | Gupta, A., and M. M. Sharma |
| Journal | Journal of Colloid and Interface Science |
| Volume | 149 |
| Issue | 02 |
| Start Page | 392 |
| Pagination | 392-406 |
| Date Published | 03/1992 |
| Other Numbers | 0021-9797(92)90430-T |
| Keywords | Basic Surface and Colloid Science, Surface Forces, Thin Films, Wettability and Thin Films |
| Abstract | Experiments were conducted to study thin film stability and measure disjoining pressure isotherms for solid-liquid-liquid systems using ellipsometry. Particular attention was paid to film thicknesses in the range 10 to 1000 Å where relatively few measurements are available. In the glass-brine-mercury system chosen for our studies, the mercury-brine interface offers a unique opportunity to study the effects of the electrostatic component of the disjoining pressure isotherm. It was observed that the surface potential on the mercury electrode as well as the pH and brine concentration had a small but measureable influence on the aqueous film thickness profile and on the resulting disjoining pressure isotherm |
| DOI | 10.1016/0021-9797(92)90430-T |
