Titel
Supercoiled ring polymers under shear flow
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Abstract
We apply monomer-resolved computer simulations of supercoiled ring polymers under shear, taking full account of the hydrodynamic interactions, accompanied, in parallel, by simulations in which these are switched off. The combination of bending and torsional rigidities inherent in these polymers, in conjunction with hydrodynamics, has a profound impact on their flow properties. In contrast to their flexible counterparts, which dramatically deform and inflate under shear [Liebetreu et al., Commun. Mater. 2020, 1, 4], supercoiled rings undergo only weak changes in their overall shape and they display both a reduced propensity to tumbling (at fixed Weissenberg number) and a much stronger orientational resistance with respect to their flexible counterparts. In the presence of hydrodynamic interactions, the coupling of the polymer to solvent flow is capable of bringing about a topological transformation of writhe to twist at strong shear upon conservation of the overall linking number.
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
https://phaidra.univie.ac.at/o:2086319
Erschienen in
Titel
Nanoscale
Band
16
Ausgabe
18
ISSN
2040-3364
Erscheinungsdatum
2024
Seitenanfang
8880
Seitenende
8899
Verlag
Royal Society of Chemistry (RSC)
Projektnummer
GA101072964 – European Union (all programmes)
Erscheinungsdatum
2024
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