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- Title
Direct measurement of topological interactions in polymers under shear using neutron spin echo spectroscopy.
- Authors
Kawecki, Maciej; A. Adlmann, Franz; Gutfreund, Philipp; Falus, Peter; Uhrig, David; Gupta, Sudipta; Farago, Bela; Zolnierczuk, Piotr; Cochran, Malcom; Wolff, Max
- Abstract
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.
- Publication
Scientific Reports, 2019, Vol 9, Issue 1, p1
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/s41598-019-39437-2