Ostwald ripening in the transient regime: a cryo-TEM study
| Autor: | Dganit Danino, L. Deriemaeker, and Y. Talmon, Y. De Smet, R. Finsy |
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| Přispěvatelé: | Physical and Colloidal Chemistry, Vrije Universiteit Brussel |
| Jazyk: | angličtina |
| Rok vydání: | 2000 |
| Předmět: |
Ostwald ripening
Materials science Analytical chemistry Surfaces and Interfaces Radius Condensed Matter Physics chemistry.chemical_compound symbols.namesake Cryo tem chemistry Squalane Emulsion Electrochemistry symbols General Materials Science Particle size Transient (oscillation) Spectroscopy Tetradecane |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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