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Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis

[Image: see text] The effective viscosity in polymer solutions probed by diffusion of nanoparticles depends on their size. It is a well-defined function of the probe size, the radius of gyration, mesh size (correlation length), activation energy, and its parameters. As the nanoparticle’s size exceed...

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Autores principales: Agasty, Airit, Wisniewska, Agnieszka, Kalwarczyk, Tomasz, Koynov, Kaloian, Holyst, Robert
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8159165/
https://www.ncbi.nlm.nih.gov/pubmed/34056617
http://dx.doi.org/10.1021/acsapm.1c00348
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author Agasty, Airit
Wisniewska, Agnieszka
Kalwarczyk, Tomasz
Koynov, Kaloian
Holyst, Robert
author_facet Agasty, Airit
Wisniewska, Agnieszka
Kalwarczyk, Tomasz
Koynov, Kaloian
Holyst, Robert
author_sort Agasty, Airit
collection PubMed
description [Image: see text] The effective viscosity in polymer solutions probed by diffusion of nanoparticles depends on their size. It is a well-defined function of the probe size, the radius of gyration, mesh size (correlation length), activation energy, and its parameters. As the nanoparticle’s size exceeds the radius of gyration of polymer coils, the effective viscosity approaches its macroscopic limiting value. Here, we apply the equation for effective viscosity in the macroscopic limit to the following polymer solutions: hydroxypropyl cellulose (HPC) in water, polymethylmethacrylate (PMMA) in toluene, and polyacrylonitrile (PAN) in dimethyl sulfoxide (DMSO). We compare them with previous data for PEG/PEO in water and PDMS in ethyl acetate. We determine polymer parameters from the measurements of the macroscopic viscosity in a wide range of average polymer molecular weights (24–300 kg/mol), temperatures (283–303 K), and concentrations (0.005–1.000 g/cm(3)). In addition, the polydispersity of polymers is taken into account in the appropriate molecular weight averaging functions. We provide the model applicable for the study of nanoscale probe diffusion in polymer solutions and macroscopic characterization of different polymer materials via rheological measurements.
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spelling pubmed-81591652021-05-28 Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis Agasty, Airit Wisniewska, Agnieszka Kalwarczyk, Tomasz Koynov, Kaloian Holyst, Robert ACS Appl Polym Mater [Image: see text] The effective viscosity in polymer solutions probed by diffusion of nanoparticles depends on their size. It is a well-defined function of the probe size, the radius of gyration, mesh size (correlation length), activation energy, and its parameters. As the nanoparticle’s size exceeds the radius of gyration of polymer coils, the effective viscosity approaches its macroscopic limiting value. Here, we apply the equation for effective viscosity in the macroscopic limit to the following polymer solutions: hydroxypropyl cellulose (HPC) in water, polymethylmethacrylate (PMMA) in toluene, and polyacrylonitrile (PAN) in dimethyl sulfoxide (DMSO). We compare them with previous data for PEG/PEO in water and PDMS in ethyl acetate. We determine polymer parameters from the measurements of the macroscopic viscosity in a wide range of average polymer molecular weights (24–300 kg/mol), temperatures (283–303 K), and concentrations (0.005–1.000 g/cm(3)). In addition, the polydispersity of polymers is taken into account in the appropriate molecular weight averaging functions. We provide the model applicable for the study of nanoscale probe diffusion in polymer solutions and macroscopic characterization of different polymer materials via rheological measurements. American Chemical Society 2021-04-12 2021-05-14 /pmc/articles/PMC8159165/ /pubmed/34056617 http://dx.doi.org/10.1021/acsapm.1c00348 Text en © 2021 The Authors. Published by American Chemical Society Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Agasty, Airit
Wisniewska, Agnieszka
Kalwarczyk, Tomasz
Koynov, Kaloian
Holyst, Robert
Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis
title Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis
title_full Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis
title_fullStr Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis
title_full_unstemmed Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis
title_short Macroscopic Viscosity of Polymer Solutions from the Nanoscale Analysis
title_sort macroscopic viscosity of polymer solutions from the nanoscale analysis
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8159165/
https://www.ncbi.nlm.nih.gov/pubmed/34056617
http://dx.doi.org/10.1021/acsapm.1c00348
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