Shear Induced Interactions Cause Polymer Compression

Shear induced particle pressure occurs in concentrated suspensions of particles. Importantly, the significance of the shear induced particle pressure has not been recognized in polymer rheology. The shear induced particle pressure results in an inward pressure on the polymer chains resulting in a sh...

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Detalles Bibliográficos
Autores principales: Dunstan, Dave E., Harvie, Dalton J. E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7099029/
https://www.ncbi.nlm.nih.gov/pubmed/32218456
http://dx.doi.org/10.1038/s41598-020-62297-0
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author Dunstan, Dave E.
Harvie, Dalton J. E.
author_facet Dunstan, Dave E.
Harvie, Dalton J. E.
author_sort Dunstan, Dave E.
collection PubMed
description Shear induced particle pressure occurs in concentrated suspensions of particles. Importantly, the significance of the shear induced particle pressure has not been recognized in polymer rheology. The shear induced particle pressure results in an inward pressure on the polymer chains resulting in a shear dependent compressive force. The analytical form of the force balance equations that incorporate the effect of shear induced particle pressure predict a reduced polymer blob size and reducing viscosity with increasing shear rate as has been observed experimentally. Power law behavior is found for the viscosity in accord with the general observations for concentrated polymer rheology.
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spelling pubmed-70990292020-03-31 Shear Induced Interactions Cause Polymer Compression Dunstan, Dave E. Harvie, Dalton J. E. Sci Rep Article Shear induced particle pressure occurs in concentrated suspensions of particles. Importantly, the significance of the shear induced particle pressure has not been recognized in polymer rheology. The shear induced particle pressure results in an inward pressure on the polymer chains resulting in a shear dependent compressive force. The analytical form of the force balance equations that incorporate the effect of shear induced particle pressure predict a reduced polymer blob size and reducing viscosity with increasing shear rate as has been observed experimentally. Power law behavior is found for the viscosity in accord with the general observations for concentrated polymer rheology. Nature Publishing Group UK 2020-03-26 /pmc/articles/PMC7099029/ /pubmed/32218456 http://dx.doi.org/10.1038/s41598-020-62297-0 Text en © Crown 2020 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Dunstan, Dave E.
Harvie, Dalton J. E.
Shear Induced Interactions Cause Polymer Compression
title Shear Induced Interactions Cause Polymer Compression
title_full Shear Induced Interactions Cause Polymer Compression
title_fullStr Shear Induced Interactions Cause Polymer Compression
title_full_unstemmed Shear Induced Interactions Cause Polymer Compression
title_short Shear Induced Interactions Cause Polymer Compression
title_sort shear induced interactions cause polymer compression
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7099029/
https://www.ncbi.nlm.nih.gov/pubmed/32218456
http://dx.doi.org/10.1038/s41598-020-62297-0
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