TU Darmstadt / ULB / TUbiblio

Polymer conformation in nanoscopic soft confinement

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
Article, Bibliographie

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.

Item Type: Article
Erschienen: 2017
Creators: Kuttich, B. ; Grillo, I. ; Schottner, S. ; Gallei, M. ; Stühn, B.
Type of entry: Bibliographie
Title: Polymer conformation in nanoscopic soft confinement
Language: English
Date: 2017
Publisher: The Royal Society of Chemistry
Journal or Publication Title: Soft Matter
Volume of the journal: 13
DOI: 10.1039/C7SM01179B
URL / URN: http://dx.doi.org/10.1039/C7SM01179B
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.

Divisions: 05 Department of Physics > Institute for condensed matter physics (2021 merged in Institute for Condensed Matter Physics) > Experimental Condensed Matter Physics
05 Department of Physics > Institute for condensed matter physics (2021 merged in Institute for Condensed Matter Physics)
05 Department of Physics
Date Deposited: 23 Nov 2017 08:58
Last Modified: 23 Nov 2017 08:58
PPN:
Export:
Suche nach Titel in: TUfind oder in Google
Send an inquiry Send an inquiry

Options (only for editors)
Show editorial Details Show editorial Details