Aqueous foam films stabilized by a non-ionic surface-active agent
- 1 January 1970
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Faraday Special Discussions of the Chemical Society
- Vol. 1, 30-36
- https://doi.org/10.1039/sd9700100030
Abstract
The thicknesses and tensions of black films formed by aqueous solutions of a pure, non-ionic surface-active agent, n-decyl methyl sulphoxide (DMS), have been measured at 298 and 308 K as a function of sodium chloride concentration. In the DMS + NaCl + H2O system, second black films are formed at low ionic strengths whereas first black films are formed at higher ionic strengths (> 100 mol m–3). Estimated values for the composite Hamaker constant for first and second black films have been obtained and compared with theoretical values.Keywords
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