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Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength

We investigate transport properties of model polyelectrolyte systems at physiological ionic strength (0.154 M). Covering a broad range of flow length scales—from diffusion of molecular probes to macroscopic viscous flow—we establish a single, continuous function describing the scale dependent viscos...

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Detalles Bibliográficos
Autores principales: Sozanski, Krzysztof, Wisniewska, Agnieszka, Kalwarczyk, Tomasz, Sznajder, Anna, Holyst, Robert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990340/
https://www.ncbi.nlm.nih.gov/pubmed/27536866
http://dx.doi.org/10.1371/journal.pone.0161409
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author Sozanski, Krzysztof
Wisniewska, Agnieszka
Kalwarczyk, Tomasz
Sznajder, Anna
Holyst, Robert
author_facet Sozanski, Krzysztof
Wisniewska, Agnieszka
Kalwarczyk, Tomasz
Sznajder, Anna
Holyst, Robert
author_sort Sozanski, Krzysztof
collection PubMed
description We investigate transport properties of model polyelectrolyte systems at physiological ionic strength (0.154 M). Covering a broad range of flow length scales—from diffusion of molecular probes to macroscopic viscous flow—we establish a single, continuous function describing the scale dependent viscosity of high-salt polyelectrolyte solutions. The data are consistent with the model developed previously for electrically neutral polymers in a good solvent. The presented approach merges the power-law scaling concepts of de Gennes with the idea of exponential length scale dependence of effective viscosity in complex liquids. The result is a simple and applicable description of transport properties of high-salt polyelectrolyte solutions at all length scales, valid for motion of single molecules as well as macroscopic flow of the complex liquid.
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spelling pubmed-49903402016-08-29 Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength Sozanski, Krzysztof Wisniewska, Agnieszka Kalwarczyk, Tomasz Sznajder, Anna Holyst, Robert PLoS One Research Article We investigate transport properties of model polyelectrolyte systems at physiological ionic strength (0.154 M). Covering a broad range of flow length scales—from diffusion of molecular probes to macroscopic viscous flow—we establish a single, continuous function describing the scale dependent viscosity of high-salt polyelectrolyte solutions. The data are consistent with the model developed previously for electrically neutral polymers in a good solvent. The presented approach merges the power-law scaling concepts of de Gennes with the idea of exponential length scale dependence of effective viscosity in complex liquids. The result is a simple and applicable description of transport properties of high-salt polyelectrolyte solutions at all length scales, valid for motion of single molecules as well as macroscopic flow of the complex liquid. Public Library of Science 2016-08-18 /pmc/articles/PMC4990340/ /pubmed/27536866 http://dx.doi.org/10.1371/journal.pone.0161409 Text en © 2016 Sozanski et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Sozanski, Krzysztof
Wisniewska, Agnieszka
Kalwarczyk, Tomasz
Sznajder, Anna
Holyst, Robert
Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength
title Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength
title_full Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength
title_fullStr Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength
title_full_unstemmed Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength
title_short Motion of Molecular Probes and Viscosity Scaling in Polyelectrolyte Solutions at Physiological Ionic Strength
title_sort motion of molecular probes and viscosity scaling in polyelectrolyte solutions at physiological ionic strength
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4990340/
https://www.ncbi.nlm.nih.gov/pubmed/27536866
http://dx.doi.org/10.1371/journal.pone.0161409
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