Constitutive equations in nonlinear viscoelasticity of glassy polymers based on the concept of traps

Aleksey D. Drozdov

doi:10.1002/pen.11211

Constitutive equations in nonlinear viscoelasticity of glassy polymers based on the concept of traps

Aleksey D. Drozdov

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

9 Scopus citations

Abstract

Constitutive equations are derived for the nonlinear viscoelastic response of amorphous polymers. The model treats a glassy polymer as an ensemble of independent relaxing regions that randomly hop in their cages being thermally activated. Rearrangement occurs when a flow unit reaches some liquid-like state. Stress-strain relations are verified using experimental data in tensile relaxation tests for polyester resins with two types of flexibilizers. Fair agreement is demonstrated between observations and results of numerical simulation.

Original language	English
Pages (from-to)	818-825
Number of pages	8
Journal	Polymer Engineering and Science
Volume	40
Issue number	3
DOIs	https://doi.org/10.1002/pen.11211
State	Published - 1 Jan 2000
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
Polymers and Plastics
Materials Chemistry

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10.1002/pen.11211

Cite this

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abstract = "Constitutive equations are derived for the nonlinear viscoelastic response of amorphous polymers. The model treats a glassy polymer as an ensemble of independent relaxing regions that randomly hop in their cages being thermally activated. Rearrangement occurs when a flow unit reaches some liquid-like state. Stress-strain relations are verified using experimental data in tensile relaxation tests for polyester resins with two types of flexibilizers. Fair agreement is demonstrated between observations and results of numerical simulation.",

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AB - Constitutive equations are derived for the nonlinear viscoelastic response of amorphous polymers. The model treats a glassy polymer as an ensemble of independent relaxing regions that randomly hop in their cages being thermally activated. Rearrangement occurs when a flow unit reaches some liquid-like state. Stress-strain relations are verified using experimental data in tensile relaxation tests for polyester resins with two types of flexibilizers. Fair agreement is demonstrated between observations and results of numerical simulation.

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Constitutive equations in nonlinear viscoelasticity of glassy polymers based on the concept of traps

Abstract

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