Improved spreading rates for monolayers applied as emulsions to reduce water evaporation

Herzig, M.A., Barnes, G.T. and Gentle, I.R. (2011) Improved spreading rates for monolayers applied as emulsions to reduce water evaporation. Journal of Colloid and Interface Science, 357 1: 239-242. doi:10.1016/j.jcis.2011.01.071

Author Herzig, M.A.
Barnes, G.T.
Gentle, I.R.
Title Improved spreading rates for monolayers applied as emulsions to reduce water evaporation
Journal name Journal of Colloid and Interface Science   Check publisher's open access policy
ISSN 0021-9797
Publication date 2011-05-01
Sub-type Article (original research)
DOI 10.1016/j.jcis.2011.01.071
Volume 357
Issue 1
Start page 239
End page 242
Total pages 4
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Language eng
Abstract To be suitable for reducing water evaporation, monolayers need to be easy to apply and also spread quickly across the surface of water. However, the choice of monolayer often involves a compromise between spreading rate and evaporation resistance. Because emulsions of the monolayer material have been suggested as a way to improve spreading, emulsions were made with the long-chain alcohols hexadecanol, octadecanol and eicosanol using the non-ionic surfactants Brij 78 and Tween 60 as emulsifying agents. The emulsions of octadecanol and eicosanol spread faster than the corresponding powder. However there was no improvement in the spreading of hexadecanol emulsion due to a significant amount of the material dispersing into the bulk water instead of spreading at the interface. The choice of emulsifier to stabilise the emulsions is critical for effective evaporation resistance. Whereas the octadecanol emulsion made with Brij 78 showed improved evaporation resistance, the emulsion with Tween 60 had an appreciably lower evaporation resistance than powdered octadecanol. One limitation of the emulsion application method is the poor spreading on surfaces with an already high surface pressure.
Keyword Water evaporation
Langmuir monolayers
Evaporation reduction
Emulsion application
Mixed Monolayers
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 27 January 2011.

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Chemistry and Molecular Biosciences
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 9 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 20 Oct 2011, 02:19:25 EST by System User on behalf of School of Chemistry & Molecular Biosciences