Polymer Engineering Faculty Research

Title

Flow-Induced Crystallization and Birefringence in High-Spped Spun PET Fibers

Document Type

Article

Publication Date

Fall 2004

Abstract

A novel approach for the simulation of the development of crystallinity and birefringence on the spinline including neck-like deformation was proposed using a nonlinear viscoelastic constitutive equation with crystallinity dependent viscosity and relaxation time. The approach was based on the calculation of melting temperature elevation, elastic recovery and crystalline and amorphous orientation function frozen when the flow-induced crystallization occurred. The predicted temperature, diameter, density and birefringence profile in both low- and high-speed spun PET fibers were in good agreement with the experimental data from literature.

Volume

50

First Page

3757

Last Page

3761

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