A two-phase self-consistent model for the deformation and phase transformation behavior of polymers above the glass transition temperature

Application to PET

A. Makradi, Said Ahzi, R. V. Gregory, D. D. Edie

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

A two-phase self-consistent model for large deformation stress-strain behavior and strain-induced crystallization in polymers at temperatures above the glass transition temperature is proposed. In this model, a composite framework is utilized to deal with the presence of the two phases, crystalline and amorphous, after the onset of strain-induced crystallization. The plastic behavior of each phase is approached by a widely used viscoplastic power law. The crystallization rate is expressed following a non-isothermal phenomenological expression based on the modified Avrami equation. Our predicted results are compared to the upper and lower bound estimates and to the existing experimental results in which good agreement is found with these experiments.

Original languageEnglish
Pages (from-to)741-758
Number of pages18
JournalInternational Journal of Plasticity
Volume21
Issue number4
DOIs
Publication statusPublished - Apr 2005
Externally publishedYes

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Crystallization
Polymers
Phase transitions
Plastics
Crystalline materials
Composite materials
Glass transition temperature
Experiments
Temperature

Keywords

  • Micromechanical modeling
  • PET
  • Polymer hot drawing
  • Strain-induced crystallization

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

A two-phase self-consistent model for the deformation and phase transformation behavior of polymers above the glass transition temperature : Application to PET. / Makradi, A.; Ahzi, Said; Gregory, R. V.; Edie, D. D.

In: International Journal of Plasticity, Vol. 21, No. 4, 04.2005, p. 741-758.

Research output: Contribution to journalArticle

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