Kraska, M. ; Domschke, M. ; Stühn, B. (2013)
Concentration induced ordering of microemulsion droplets in bulk and near the liquid-air interface.
In: SOFT MATTER, 9 (13)
doi: 10.1039/c3sm27516g
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
The structure of the air interface of water-AOT (sodium bis(2-ethyl hexyl) sulfosuccinate)-decane microemulsions in the droplet phase with omega = 20, 30, 40 is studied in a range of compositions with droplet volume fractions of phi = 0.2 to 0.7. A combination of small angle X-ray scattering (SAXS) and X-ray reflectometry (XR) reveals a detailed image of the morphology in the bulk and at the microemulsion-air interface. The structure of the volume is described in terms of effective structure factors to obtain the bulk droplet structure and correlations. With increasing droplet density phi the droplets remain unchanged in their size and show an increase in the local order. The reflectivity behaviour of the samples can be consistently explained by bulk small angle scattering and specular reflectivity at the surface. The microemulsion-air interface consists of droplets with the same phi-dependent local order as in the bulk, e.g. we found a droplet volume fraction induced ordering of droplets.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2013 |
| Autor(en): | Kraska, M. ; Domschke, M. ; Stühn, B. |
| Art des Eintrags: | Bibliographie |
| Titel: | Concentration induced ordering of microemulsion droplets in bulk and near the liquid-air interface |
| Sprache: | Englisch |
| Publikationsjahr: | 6 Mai 2013 |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | SOFT MATTER |
| Jahrgang/Volume einer Zeitschrift: | 9 |
| (Heft-)Nummer: | 13 |
| DOI: | 10.1039/c3sm27516g |
| Kurzbeschreibung (Abstract): | The structure of the air interface of water-AOT (sodium bis(2-ethyl hexyl) sulfosuccinate)-decane microemulsions in the droplet phase with omega = 20, 30, 40 is studied in a range of compositions with droplet volume fractions of phi = 0.2 to 0.7. A combination of small angle X-ray scattering (SAXS) and X-ray reflectometry (XR) reveals a detailed image of the morphology in the bulk and at the microemulsion-air interface. The structure of the volume is described in terms of effective structure factors to obtain the bulk droplet structure and correlations. With increasing droplet density phi the droplets remain unchanged in their size and show an increase in the local order. The reflectivity behaviour of the samples can be consistently explained by bulk small angle scattering and specular reflectivity at the surface. The microemulsion-air interface consists of droplets with the same phi-dependent local order as in the bulk, e.g. we found a droplet volume fraction induced ordering of droplets. |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) > Experimentelle Physik kondensierter Materie 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) > Optische Festkörperspektroskopie 05 Fachbereich Physik > Institut für Festkörperphysik (2021 umbenannt in Institut für Physik Kondensierter Materie (IPKM)) 05 Fachbereich Physik |
| Hinterlegungsdatum: | 06 Mai 2013 06:52 |
| Letzte Änderung: | 06 Mai 2013 06:52 |
| PPN: | |
| Export: | |
| Suche nach Titel in: | TUfind oder in Google |
 |
Frage zum Eintrag |
Optionen (nur für Redakteure)
 |
Redaktionelle Details anzeigen |
Drucken
Impressum