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Direct measurement of topological interactions in polymers under shear using neutron spin echo spectroscopy
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.ORCID iD: 0000-0002-3775-5277
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.ORCID iD: 0000-0002-5748-2237
ILL Grenoble, 71 Ave Martyrs, F-38000 Grenoble, France.
ILL Grenoble, 71 Ave Martyrs, F-38000 Grenoble, France.
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2019 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 9, article id 2823Article in journal (Refereed) Published
Abstract [en]

We present in-situ neutron spin echo measurements on an entangled polydimethylsiloxane melt under shear and demonstrate the ability to monitor nano-scale dynamics in flowing liquids. We report no changes in the topological interactions of the chains for shear rates approaching the inverse longest relaxation time. Further experiments following along this line will allow to systematically test the predictions of theories, like e.g. convective constraint release.

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NATURE PUBLISHING GROUP , 2019. Vol. 9, article id 2823
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Condensed Matter Physics
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URN: urn:nbn:se:uu:diva-379588DOI: 10.1038/s41598-019-39437-2ISI: 000459698900084PubMedID: 30808946OAI: oai:DiVA.org:uu-379588DiVA, id: diva2:1296969
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Swedish Research Council, 201604645Available from: 2019-03-18 Created: 2019-03-18 Last updated: 2019-03-18Bibliographically approved

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Kawecki, MaciejAdlmann, Franz A.Wolff, Max
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