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Polymer conformation in nanoscopic soft confinement

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 to determine 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 local scale. This support the picture of a polymer strongly adsorbed on the surfactant layer with a thickness of several angstroms.

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Publication details

The article was received on 14 Jun 2017, accepted on 09 Aug 2017 and first published on 10 Aug 2017


Article type: Paper
DOI: 10.1039/C7SM01179B
Citation: Soft Matter, 2017, Accepted Manuscript
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    Polymer conformation in nanoscopic soft confinement

    B. Kuttich, I. Grillo, S. Schöttner, M. Gallei and B. Stühn, Soft Matter, 2017, Accepted Manuscript , DOI: 10.1039/C7SM01179B

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