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Title: Surfactant enhanced spreading: Catanionic mixture
Authors: Kovalchuk, Nina
Barton, Alix
Trybala, Anna
Starov, Victor
Keywords: Complete wetting
Partial wetting
Surface tension
Apparent contact angle
Issue Date: 2014
Publisher: © The Authors. Published by Elsevier
Citation: KOVALCHUK, N. ...et al., 2014. Surfactant enhanced spreading: Catanionic mixture. Colloids and Interface Science Communications, 1, pp. 1-5.
Abstract: The spreading behaviour of aqueous solutions of mixture of two surfactants sodium 1-decane sulfonate and dodecyltrimethylammoniumbromide is investigated on two hydrophobic substrates. The solutions demonstrate rapid complete wetting on polyethylene film and only partial wetting on silanized glass. It is shown that the spreading behaviour depends crucially on the age of the mixture and is determined by the crystal growth affecting the surface tension of solution. An increase of surface tension with time results in an interesting phenomenon — a transition from complete to partial wetting, that is, a droplet of freshly prepared mixture first spreads completely but after some time the solution assembles into the droplet again
Description: This is an Open Access Article. It is published by Elsevier under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/
Sponsor: This work was supported by the Engineering and Physical Sciences Research Council, UK, grant EP/D077869/1 by ESA under grants FASES and PASTA, COST MP1106 project and CoWet ITN, EU.
Version: Published
DOI: 10.1016/j.colcom.2014.05.003
URI: https://dspace.lboro.ac.uk/2134/25761
Publisher Link: http://dx.doi.org/10.1016/j.colcom.2014.05.003
Appears in Collections:Published Articles (Chemical Engineering)

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