Self-Organization of Polymeric Fluids in Strong Stress Fields

Analysis of literature data and our own experimental observations have led to the conclusion that, at high deformation rates, viscoelastic liquids come to behave as rubbery materials, with strong domination by elastic deformations over flow. This can be regarded as a deformation-induced fluid-to-rub...

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Main Authors: A. V. Semakov, V. G. Kulichikhin, A. Y. Malkin
Format: Article
Language:English
Published: Wiley 2015-01-01
Series:Advances in Condensed Matter Physics
Online Access:http://dx.doi.org/10.1155/2015/172862
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author A. V. Semakov
V. G. Kulichikhin
A. Y. Malkin
author_facet A. V. Semakov
V. G. Kulichikhin
A. Y. Malkin
author_sort A. V. Semakov
collection DOAJ
description Analysis of literature data and our own experimental observations have led to the conclusion that, at high deformation rates, viscoelastic liquids come to behave as rubbery materials, with strong domination by elastic deformations over flow. This can be regarded as a deformation-induced fluid-to-rubbery transition. This transition is accompanied by elastic instability, which can lead to the formation of regular structures. So, a general explanation for these effects requires the treatment of viscoelastic liquids beyond critical deformation rates as rubbery media. Behaviouristic modeling of their behaviour is based on a new concept, which considers the medium as consisting of discrete elastic elements. Such a type of modeling introduces a set of discrete rotators settled on a lattice with two modes of elastic interaction. The first of these is their transformation from spherical to ellipsoidal shapes and orientation in an external field. The second is elastic collisions between rotators. Computer calculations have demonstrated that this discrete model correctly describes the observed structural effects, eventually resulting in a “chaos-to-order” transformation. These predictions correspond to real-world experimental data obtained under different modes of deformation. We presume that the developed concept can play a central role in understanding strong nonlinear effects in the rheology of viscoelastic liquids.
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spelling doaj-art-3d0930e453724575b9e75af3657cf44f2025-02-03T05:46:47ZengWileyAdvances in Condensed Matter Physics1687-81081687-81242015-01-01201510.1155/2015/172862172862Self-Organization of Polymeric Fluids in Strong Stress FieldsA. V. Semakov0V. G. Kulichikhin1A. Y. Malkin2Institute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninskii Prospect, Moscow 119991, RussiaInstitute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninskii Prospect, Moscow 119991, RussiaInstitute of Petrochemical Synthesis, Russian Academy of Sciences, 29 Leninskii Prospect, Moscow 119991, RussiaAnalysis of literature data and our own experimental observations have led to the conclusion that, at high deformation rates, viscoelastic liquids come to behave as rubbery materials, with strong domination by elastic deformations over flow. This can be regarded as a deformation-induced fluid-to-rubbery transition. This transition is accompanied by elastic instability, which can lead to the formation of regular structures. So, a general explanation for these effects requires the treatment of viscoelastic liquids beyond critical deformation rates as rubbery media. Behaviouristic modeling of their behaviour is based on a new concept, which considers the medium as consisting of discrete elastic elements. Such a type of modeling introduces a set of discrete rotators settled on a lattice with two modes of elastic interaction. The first of these is their transformation from spherical to ellipsoidal shapes and orientation in an external field. The second is elastic collisions between rotators. Computer calculations have demonstrated that this discrete model correctly describes the observed structural effects, eventually resulting in a “chaos-to-order” transformation. These predictions correspond to real-world experimental data obtained under different modes of deformation. We presume that the developed concept can play a central role in understanding strong nonlinear effects in the rheology of viscoelastic liquids.http://dx.doi.org/10.1155/2015/172862
spellingShingle A. V. Semakov
V. G. Kulichikhin
A. Y. Malkin
Self-Organization of Polymeric Fluids in Strong Stress Fields
Advances in Condensed Matter Physics
title Self-Organization of Polymeric Fluids in Strong Stress Fields
title_full Self-Organization of Polymeric Fluids in Strong Stress Fields
title_fullStr Self-Organization of Polymeric Fluids in Strong Stress Fields
title_full_unstemmed Self-Organization of Polymeric Fluids in Strong Stress Fields
title_short Self-Organization of Polymeric Fluids in Strong Stress Fields
title_sort self organization of polymeric fluids in strong stress fields
url http://dx.doi.org/10.1155/2015/172862
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AT vgkulichikhin selforganizationofpolymericfluidsinstrongstressfields
AT aymalkin selforganizationofpolymericfluidsinstrongstressfields