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Spreading of surfactant solutions over thin aqueous layers at low concentrations: Influence of solubility

journal contribution
posted on 18.07.2017 by Khai S. Lee, Victor Starov
A small droplet of aqueous surfactant solution at concentration below CMC was deposited on a thin water layer. A moving circular wave in the centre was formed. The time evolution of the radius of the wave was monitored. Two surfactants of different solubility were used. It was shown that the time evolution of the moving front (i) proceeds in two stages: a fast first stage and slower second stage; (ii) the time evolution of the front motion substantially depends on the surfactant solubility. We suggest a qualitative explanation of the phenomenon, which reasonably agrees with our experimental observations.

Funding

This research was supported by Engineering and Physical Sciences research Council, UK (Grant EP/D077869).

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Chemical Engineering

Published in

Journal of Colloid and Interface Science

Volume

329

Pages

361 - 365

Citation

LEE, K.S. and STAROV, V., 2009. Spreading of surfactant solutions over thin aqueous layers at low concentrations: Influence of solubility. Journal of Colloid and Interface Science, 329, pp. 361-365.

Publisher

© Elsevier

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2009

Notes

This paper is in closed access

ISSN

0021-9797

eISSN

1095-7103

Language

en

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