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Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts

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Published/Copyright: May 27, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 2 Issue 1

Abstract

A generalized representation of second moment orientation in polymer systems is presented. Orientation is expressed through the asymmetry of the polarizability tensor. The formulation presumes that local symmetry directions differ from macroscopic machine and transverse directions. The formulation leads to a set of biaxial orientation factors (equivalent to those of White and Spruiell) defined relative to symmetry axes I, II, III and a set of angles ϑI1 ϑII2 and ϑIII3 representing the directions of the axes relative to the laboratory axes (1, 2, 3) such as the machine (1), transverse (2) and thickness (normal) directions (3). Any two of these angles eγ, ΘI1 and ΘII2 are sufficient. The formulation is applied to interpret orientation developed in simple shear.

* Mail address: Dr. J.L. White, Polymer Engineering Center, University of Akron, Akron, Ohio 44304, U.S.A.
Published Online: 2013-05-27
Published in Print: 1987-09-01

© 1987, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Present and Future Trends in Polymer Blends Technology**
  3. A Dispersive Mixing Testing Apparatus
  4. Injection Molding of Reinforced Thermosets
  5. Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
  6. Fiber Spinning with Molecular Models
  7. Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
  8. Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
  9. Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
  10. Contents
  11. Review Paper
  12. Present and Future Trends in Polymer Blends Technology
  13. Original Contributions
  14. A Dispersive Mixing Testing Apparatus
  15. Injection Molding of Reinforced Thermosets
  16. Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
  17. Fiber Spinning with Molecular Models
  18. Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
  19. Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
  20. Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
https://doi.org/10.3139/217.870048

Articles in the same Issue

  1. Contents
  2. Present and Future Trends in Polymer Blends Technology**
  3. A Dispersive Mixing Testing Apparatus
  4. Injection Molding of Reinforced Thermosets
  5. Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
  6. Fiber Spinning with Molecular Models
  7. Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
  8. Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
  9. Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
  10. Contents
  11. Review Paper
  12. Present and Future Trends in Polymer Blends Technology
  13. Original Contributions
  14. A Dispersive Mixing Testing Apparatus
  15. Injection Molding of Reinforced Thermosets
  16. Rheological Characterization of Sulfuric Acid Solutions of Poly(p-phenyleneterephthalamide)
  17. Fiber Spinning with Molecular Models
  18. Gel-Permeation Chromatography as a Tool for the Real-Time-Estimation of the Chain length Distribution in a Polymerization Reactor
  19. Second Moment Specification of Complex States of Polymer Chain Orientation in Fabricated Plastic Parts
  20. Thermal and Crystallization Behaviour of Polyphenylene Sulfide in Engineering Polymer Blends with HDPE
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