Kuttich, B. ; Grillo, I. ; Schottner, S. ; Gallei, M. ; Stühn, B. (2017)
Polymer conformation in nanoscopic soft confinement.
In: Soft Matter, 13
doi: 10.1039/C7SM01179B
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
We study the conformation of a polymer (polyethylene glycol) in a nanoscopic soft confinement with attractive walls. The polymer is added to a water-in-oil microemulsion based on the deuterated anionic surfactant AOT, d-octane and D2O. Three different droplet sizes and up to three polymers per droplet are investigated with small angle scattering combining X-rays and neutrons. This allows determining the confinement size and polymer conformation on identical samples. Whereas polymer conformation in bulk is found to be well described with the model of a Gaussian coil its radius of gyration is drastically increased in the droplet. At the same time it is compressed on a local scale. This supports the picture of a polymer strongly adsorbed on the surfactant layer with a thickness of several Angstroms.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2017 |
| Autor(en): | Kuttich, B. ; Grillo, I. ; Schottner, S. ; Gallei, M. ; Stühn, B. |
| Art des Eintrags: | Bibliographie |
| Titel: | Polymer conformation in nanoscopic soft confinement |
| Sprache: | Englisch |
| Publikationsjahr: | 2017 |
| Verlag: | The Royal Society of Chemistry |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Soft Matter |
| Jahrgang/Volume einer Zeitschrift: | 13 |
| DOI: | 10.1039/C7SM01179B |
| URL / URN: | http://dx.doi.org/10.1039/C7SM01179B |
| Kurzbeschreibung (Abstract): | We study the conformation of a polymer (polyethylene glycol) in a nanoscopic soft confinement with attractive walls. The polymer is added to a water-in-oil microemulsion based on the deuterated anionic surfactant AOT, d-octane and D2O. Three different droplet sizes and up to three polymers per droplet are investigated with small angle scattering combining X-rays and neutrons. This allows determining the confinement size and polymer conformation on identical samples. Whereas polymer conformation in bulk is found to be well described with the model of a Gaussian coil its radius of gyration is drastically increased in the droplet. At the same time it is compressed on a local scale. This supports the picture of a polymer strongly adsorbed on the surfactant layer with a thickness of several Angstroms. |
| 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)) 05 Fachbereich Physik |
| Hinterlegungsdatum: | 23 Nov 2017 08:58 |
| Letzte Änderung: | 23 Nov 2017 08:58 |
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