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Dynamical Properties of Concentrated Suspensions of Block Copolymer Stars in Shear Flow
[Image: see text] Block copolymer stars (BCSs) have been demonstrated to constitute versatile, self-assembling building blocks with tunable softness, functionalization, and shape. We investigate the dynamical properties of suspensions of short-arm BCSs under linear shear flow by means of extensive p...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2020
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7735753/ https://www.ncbi.nlm.nih.gov/pubmed/33335338 http://dx.doi.org/10.1021/acs.macromol.0c01365 |
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author | Jaramillo-Cano, Diego Camargo, Manuel Likos, Christos N. Gârlea, Ioana C. |
author_facet | Jaramillo-Cano, Diego Camargo, Manuel Likos, Christos N. Gârlea, Ioana C. |
author_sort | Jaramillo-Cano, Diego |
collection | PubMed |
description | [Image: see text] Block copolymer stars (BCSs) have been demonstrated to constitute versatile, self-assembling building blocks with tunable softness, functionalization, and shape. We investigate the dynamical properties of suspensions of short-arm BCSs under linear shear flow by means of extensive particle-based multiscale simulations. We determine the properties of the system for representative values of monomer packing fraction ranging from semidilute to concentrate regimes. We systematically analyze the formed network structures as a function of both shear rate and packing fraction, the reorganization of solvophobic patches, and the corresponding radial correlation functions. Connecting our findings with rheology, we calculate the viscosity as a function of shear rate and discuss the implications of the found shear thinning behavior. |
format | Online Article Text |
id | pubmed-7735753 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-77357532020-12-15 Dynamical Properties of Concentrated Suspensions of Block Copolymer Stars in Shear Flow Jaramillo-Cano, Diego Camargo, Manuel Likos, Christos N. Gârlea, Ioana C. Macromolecules [Image: see text] Block copolymer stars (BCSs) have been demonstrated to constitute versatile, self-assembling building blocks with tunable softness, functionalization, and shape. We investigate the dynamical properties of suspensions of short-arm BCSs under linear shear flow by means of extensive particle-based multiscale simulations. We determine the properties of the system for representative values of monomer packing fraction ranging from semidilute to concentrate regimes. We systematically analyze the formed network structures as a function of both shear rate and packing fraction, the reorganization of solvophobic patches, and the corresponding radial correlation functions. Connecting our findings with rheology, we calculate the viscosity as a function of shear rate and discuss the implications of the found shear thinning behavior. American Chemical Society 2020-11-12 2020-11-24 /pmc/articles/PMC7735753/ /pubmed/33335338 http://dx.doi.org/10.1021/acs.macromol.0c01365 Text en © 2020 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited. |
spellingShingle | Jaramillo-Cano, Diego Camargo, Manuel Likos, Christos N. Gârlea, Ioana C. Dynamical Properties of Concentrated Suspensions of Block Copolymer Stars in Shear Flow |
title | Dynamical
Properties of Concentrated Suspensions of Block Copolymer Stars in
Shear Flow |
title_full | Dynamical
Properties of Concentrated Suspensions of Block Copolymer Stars in
Shear Flow |
title_fullStr | Dynamical
Properties of Concentrated Suspensions of Block Copolymer Stars in
Shear Flow |
title_full_unstemmed | Dynamical
Properties of Concentrated Suspensions of Block Copolymer Stars in
Shear Flow |
title_short | Dynamical
Properties of Concentrated Suspensions of Block Copolymer Stars in
Shear Flow |
title_sort | dynamical
properties of concentrated suspensions of block copolymer stars in
shear flow |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7735753/ https://www.ncbi.nlm.nih.gov/pubmed/33335338 http://dx.doi.org/10.1021/acs.macromol.0c01365 |
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