Postspinning draw of polymeric fibers: Multiscale micromechanical model for a solid polymer under finite deformation and strain-induced crystallization

A. Makradi, C. L. Cox, Said Ahzi, S. Belouettar

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

A polymeric fiber postspinning draw model is developed. The fiber is stretched between the take-up roll and the draw roll and then relaxed between the draw roll and the relax roll. The behavior of the polymeric material is described by a cooperative elastic-viscoplastic model for a wide range of temperatures and strain rates. The profiles of the fiber velocity, stress, strain rate, and temperature between the different rolls are simulated via the coupling of the cooperative model with the mass, momentum, and energy equations and the boundary conditions. Simulations are conducted with the finite-element method. The computed results show an increase in the fiber stress between the take-up roll and the draw roll due to the molecular orientation and the increase in the crystallization percentage. The sliding distance of the fiber on the draw roll is related to the draw ratio and fiber stiffness. A dramatic drop in the fiber strain rate on the draw roll leads to relaxation of the intermolecular resistance followed by a freeze of the fiber structure when the strain rate vanishes to zero on the draw roll and between the draw roll and the relax roll.

Original languageEnglish
Pages (from-to)2259-2266
Number of pages8
JournalJournal of Applied Polymer Science
Volume100
Issue number3
DOIs
Publication statusPublished - 5 May 2006
Externally publishedYes

Fingerprint

Crystallization
Polymers
Fibers
Strain rate
Molecular orientation
Momentum
Stiffness
Boundary conditions
Finite element method
Temperature

Keywords

  • Crystallization
  • Fibers
  • Isotactic
  • Poly(propylene) (PP)
  • Processing
  • Strain

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Postspinning draw of polymeric fibers : Multiscale micromechanical model for a solid polymer under finite deformation and strain-induced crystallization. / Makradi, A.; Cox, C. L.; Ahzi, Said; Belouettar, S.

In: Journal of Applied Polymer Science, Vol. 100, No. 3, 05.05.2006, p. 2259-2266.

Research output: Contribution to journalArticle

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