Effect of yielding on the viscoelastic response of amorphous glassy polymers

Aleksey D. Drozdov

doi:10.1002/app.1345

Effect of yielding on the viscoelastic response of amorphous glassy polymers

Aleksey D. Drozdov

Research output: Contribution to journal › Article › peer-review

Abstract

Constitutive equations are derived for the nonlinear viscoelastic behavior of amorphous glassy polymers. The model is based on the theory of cooperative relaxation in a version of the trapping concept. Stress-strain relations are applied to fit experimental data for polycarbonate in the sub-yield and post-yield regions. Fair agreement is demonstrated between observations and results of numerical simulation. It is revealed that yielding causes substantial changes in the energy landscape of amorphous polymers.

Original language	English
Pages (from-to)	2383-2393
Number of pages	11
Journal	Journal of Applied Polymer Science
Volume	80
Issue number	13
DOIs	https://doi.org/10.1002/app.1345
State	Published - 24 Jun 2001
Externally published	Yes

Keywords

Amorphous polymers
Energy landscape
Trapping concept
Viscoelasticity
Viscoplasticity

ASJC Scopus subject areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

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10.1002/app.1345

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abstract = "Constitutive equations are derived for the nonlinear viscoelastic behavior of amorphous glassy polymers. The model is based on the theory of cooperative relaxation in a version of the trapping concept. Stress-strain relations are applied to fit experimental data for polycarbonate in the sub-yield and post-yield regions. Fair agreement is demonstrated between observations and results of numerical simulation. It is revealed that yielding causes substantial changes in the energy landscape of amorphous polymers.",

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AB - Constitutive equations are derived for the nonlinear viscoelastic behavior of amorphous glassy polymers. The model is based on the theory of cooperative relaxation in a version of the trapping concept. Stress-strain relations are applied to fit experimental data for polycarbonate in the sub-yield and post-yield regions. Fair agreement is demonstrated between observations and results of numerical simulation. It is revealed that yielding causes substantial changes in the energy landscape of amorphous polymers.

KW - Amorphous polymers

KW - Energy landscape

KW - Trapping concept

KW - Viscoelasticity

KW - Viscoplasticity

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ER -

Effect of yielding on the viscoelastic response of amorphous glassy polymers

Abstract

Keywords

ASJC Scopus subject areas

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