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Surfactant enhanced spreading: Catanionic mixture
journal contribution
posted on 2017-07-13, 08:49 authored by Nina Kovalchuk, Alix Barton, Anna TrybalaAnna Trybala, Victor StarovThe 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
Funding
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.
History
School
- Aeronautical, Automotive, Chemical and Materials Engineering
Department
- Chemical Engineering
Published in
Colloids and Interface Science CommunicationsVolume
1Pages
1 - 5Citation
KOVALCHUK, N. ...et al., 2014. Surfactant enhanced spreading: Catanionic mixture. Colloids and Interface Science Communications, 1, pp. 1-5.Publisher
© The Authors. Published by ElsevierVersion
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 4.0 International (CC BY 4.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/ by/4.0/Publication date
2014Notes
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/eISSN
2215-0382Publisher version
Language
- en