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Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing

Understanding how microscopic rearrangements manifest in macroscopic flow responses is one of the central goals of nonlinear rheological studies. Using the sequence-of-physical-processes framework, we present a natural 3D structure–rheology space that temporally correlates the structural and nonline...

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Autores principales: Lee, Johnny Ching-Wei, Porcar, Lionel, Rogers, Simon A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6680679/
https://www.ncbi.nlm.nih.gov/pubmed/31315259
http://dx.doi.org/10.3390/polym11071189
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author Lee, Johnny Ching-Wei
Porcar, Lionel
Rogers, Simon A.
author_facet Lee, Johnny Ching-Wei
Porcar, Lionel
Rogers, Simon A.
author_sort Lee, Johnny Ching-Wei
collection PubMed
description Understanding how microscopic rearrangements manifest in macroscopic flow responses is one of the central goals of nonlinear rheological studies. Using the sequence-of-physical-processes framework, we present a natural 3D structure–rheology space that temporally correlates the structural and nonlinear viscoelastic parameters. Exploiting the rheo-small-angle neutron scattering (rheo-SANS) techniques, we demonstrate the use of the framework with a model system of polymer-like micelles (PLMs), where we unveil a sequence of microscopic events that micelles experience under dynamic shearing across a range of frequencies. The least-aligned state of the PLMs is observed to migrate from the total strain extreme toward zero strain with increasing frequency. Our proposed 3D space is generic, and can be equally applied to other soft materials under any sort of deformation, such as startup shear or uniaxial extension. This work therefore provides a natural approach for researchers to study complex out-of-equilibrium structure–rheology relationships of soft materials.
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spelling pubmed-66806792019-08-09 Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing Lee, Johnny Ching-Wei Porcar, Lionel Rogers, Simon A. Polymers (Basel) Article Understanding how microscopic rearrangements manifest in macroscopic flow responses is one of the central goals of nonlinear rheological studies. Using the sequence-of-physical-processes framework, we present a natural 3D structure–rheology space that temporally correlates the structural and nonlinear viscoelastic parameters. Exploiting the rheo-small-angle neutron scattering (rheo-SANS) techniques, we demonstrate the use of the framework with a model system of polymer-like micelles (PLMs), where we unveil a sequence of microscopic events that micelles experience under dynamic shearing across a range of frequencies. The least-aligned state of the PLMs is observed to migrate from the total strain extreme toward zero strain with increasing frequency. Our proposed 3D space is generic, and can be equally applied to other soft materials under any sort of deformation, such as startup shear or uniaxial extension. This work therefore provides a natural approach for researchers to study complex out-of-equilibrium structure–rheology relationships of soft materials. MDPI 2019-07-16 /pmc/articles/PMC6680679/ /pubmed/31315259 http://dx.doi.org/10.3390/polym11071189 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Lee, Johnny Ching-Wei
Porcar, Lionel
Rogers, Simon A.
Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing
title Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing
title_full Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing
title_fullStr Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing
title_full_unstemmed Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing
title_short Unveiling Temporal Nonlinear Structure–Rheology Relationships under Dynamic Shearing
title_sort unveiling temporal nonlinear structure–rheology relationships under dynamic shearing
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6680679/
https://www.ncbi.nlm.nih.gov/pubmed/31315259
http://dx.doi.org/10.3390/polym11071189
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