Ostwald ripening in the transient regime: a cryo-TEM study

O. Y. De Smet, D. Danino, L. Deriemaeker, Y. Talmon, R. Finsy

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30 Scopus citations

Abstract

The evolution of the droplet size distribution of a tetradecane in water emulsion, stabilized by sodium dodecyl benzene sulfonate (SDBS) was followed by cryo-TEM during a 51 day period. As a reference for the initial distribution of a freshly prepared emulsion, the size distribution of a virtually nongrowing squalane in water emulsion was also monitored. It appears that the initial distribution is right skewed and close to log-normal with a broadness parameter of σ = 0.5. This distribution evolved rapidly to a more symmetrical one. At the end of the observation the average particle size increased by a factor of about 2.5, but the limiting left skewed distribution, predicted by the LSW (Lifshitz-Slyozov-Wagner) theory, was not obtained. The ripening rate estimated from the slope of an3 (an is the number averaged radius) as a function of time is in agreement with the prediction from the LSW theory.

Original languageEnglish
Pages (from-to)961-967
Number of pages7
JournalLangmuir
Volume16
Issue number3
DOIs
StatePublished - 8 Feb 2000
Externally publishedYes

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