Kühnhammer, Matthias ; Braun, Larissa ; Ludwig, Michael ; Soltwedel, Olaf ; Chiappisi, Leonardo ; Klitzing, Regine von (2024)
A new model to describe small-angle neutron scattering from foams.
In: Journal of Applied Crystallography, 2022, 55 (4)
doi: 10.26083/tuprints-00026635
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
The modelling of scattering data from foams is very challenging due to the complex structure of foams and is therefore often reduced to the fitting of single peak positions or feature mimicking. This article presents a more elaborate model to describe the small-angle neutron scattering (SANS) data from foams. The model takes into account the geometry of the foam bubbles and is based on an incoherent superposition of the reflectivity curves arising from the foam films and the small-angle scattering (SAS) contribution from the plateau borders. The model is capable of describing the complete scattering curve of a foam stabilized by the standard cationic surfactant tetradecyltrimethylammonium bromide (C14TAB) with different water contents, i.e. different drainage states, and provides information on the thickness distribution of liquid films inside the foam. The mean film thickness decreases with decreasing water content because of drainage, from 28 to 22 nm, while the polydispersity increases. These results are in good agreement with the film thicknesses of individual horizontal foam films studied with a thin-film pressure balance.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Kühnhammer, Matthias ; Braun, Larissa ; Ludwig, Michael ; Soltwedel, Olaf ; Chiappisi, Leonardo ; Klitzing, Regine von |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | A new model to describe small-angle neutron scattering from foams |
| Sprache: | Englisch |
| Publikationsjahr: | 10 September 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 2022 |
| Ort der Erstveröffentlichung: | Copenhagen |
| Verlag: | International Union of Crystallography |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Journal of Applied Crystallography |
| Jahrgang/Volume einer Zeitschrift: | 55 |
| (Heft-)Nummer: | 4 |
| Kollation: | 11 Seiten |
| DOI: | 10.26083/tuprints-00026635 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/26635 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | The modelling of scattering data from foams is very challenging due to the complex structure of foams and is therefore often reduced to the fitting of single peak positions or feature mimicking. This article presents a more elaborate model to describe the small-angle neutron scattering (SANS) data from foams. The model takes into account the geometry of the foam bubbles and is based on an incoherent superposition of the reflectivity curves arising from the foam films and the small-angle scattering (SAS) contribution from the plateau borders. The model is capable of describing the complete scattering curve of a foam stabilized by the standard cationic surfactant tetradecyltrimethylammonium bromide (C14TAB) with different water contents, i.e. different drainage states, and provides information on the thickness distribution of liquid films inside the foam. The mean film thickness decreases with decreasing water content because of drainage, from 28 to 22 nm, while the polydispersity increases. These results are in good agreement with the film thicknesses of individual horizontal foam films studied with a thin-film pressure balance. |
| Freie Schlagworte: | foams, foam films, small-angle neutron scattering, neutron reflectometry, thin-film pressure balances |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-266350 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 05 Fachbereich Physik 05 Fachbereich Physik > Institut für Physik Kondensierter Materie (IPKM) |
| Hinterlegungsdatum: | 10 Sep 2024 07:29 |
| Letzte Änderung: | 18 Sep 2024 10:30 |
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| Suche nach Titel in: | TUfind oder in Google |
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- A new model to describe small-angle neutron scattering from foams. (deposited 10 Sep 2024 07:29) [Gegenwärtig angezeigt]
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