Simulation and Experimental Verification of Crystallization and Birefringence in Melt Spinning of PET
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K. H. Kim
Abstract
A novel approach for the numerical simulation of the development of crystallinity and birefringence on the spinline was proposed. The approach was based on the calculation of elastic recovery and crystalline and amorphous orientation functions without making any assumption about freezing. To model crystallization, the amorphous orientation function and the flow effect on the equilibrium melting temperature elevation due to the entropy reduction between the oriented and unoriented melts were incorporated. The crystalline orientation function was calculated from the frozen-in elastic recovery. The entropy change and frozen-in elastic recovery calculation were based on a nonlinear viscoelastic constitutive Eq. with the crystallinity and temperature dependent viscosity and relaxation time. The crystalline and amorphous contributions to the overall birefringence were obtained from the crystalline orientation function and the flow birefringence, respectively. The temperature, diameter, density, and birefringence profile in both low- and high-speed spun PET fibers were predicted and compared with the experimental data from literature. Theoretical predictions were found to be in agreement with the published experimental data.
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© 2006, Hanser Publishers, Munich
Articles in the same Issue
- Contents
- Contents
- Editorial
- Dedication of the Special Issue of International Polymer Processing in Honor of Prof. James Lindsay White, Editor Emeritus and Founding Editor
- Invited Papers
- Melt Compounding of Polymeric Nanocomposites
- Experiments and Analysis of Effect of Calender Gaps on Melting of PVC Powders in an Intermeshing Counter-rotating Twin-screw Extruder
- Quantitative Analysis for Polymer Degradation in the Extrusion Process
- Visualization of Flow Instabilities for High Density Polyethylene
- Heat Transfer through Metal Walls of Finite Thickness
- Simulation and Experimental Verification of Crystallization and Birefringence in Melt Spinning of PET
- Structural Development and Properties of Melt Spun Poly(butylene succinate) and Poly(butylene terephthalate-co-succinate-co-adipate) Biodegradable Fibers
- External Calibration in PA12 Tube Extrusion
- Tubular Film Extrusion Stability of Metallocene Linear Low Density Polyethylene
- Multilayer Barrier Film of Biaxially Oriented PA6/EVOH by Double Bubble Tubular Film Process
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Editorial
- Dedication of the Special Issue of International Polymer Processing in Honor of Prof. James Lindsay White, Editor Emeritus and Founding Editor
- Invited Papers
- Melt Compounding of Polymeric Nanocomposites
- Experiments and Analysis of Effect of Calender Gaps on Melting of PVC Powders in an Intermeshing Counter-rotating Twin-screw Extruder
- Quantitative Analysis for Polymer Degradation in the Extrusion Process
- Visualization of Flow Instabilities for High Density Polyethylene
- Heat Transfer through Metal Walls of Finite Thickness
- Simulation and Experimental Verification of Crystallization and Birefringence in Melt Spinning of PET
- Structural Development and Properties of Melt Spun Poly(butylene succinate) and Poly(butylene terephthalate-co-succinate-co-adipate) Biodegradable Fibers
- External Calibration in PA12 Tube Extrusion
- Tubular Film Extrusion Stability of Metallocene Linear Low Density Polyethylene
- Multilayer Barrier Film of Biaxially Oriented PA6/EVOH by Double Bubble Tubular Film Process
- PPS News
- PPS News
- Seikei-Kakou Abstracts
- Seikei-Kakou Abstracts