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Skew Stretched Polycarbonate Films

  • J. P. Wu and J. L. White
Published/Copyright: May 27, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 7 Issue 2

Abstract

The formation and characterization of complex chain orientation of polycarbonate skew stretched films is described. The directions of symmetry axes of orientation are represented in the form of refractive index and infrared absorption ellipsoids. The chain orientation is evaluated in terms of White-Spruiell biaxial orientation factors based on the principal axes of orientation. The anisotropic mechanical properties of skew stretched films are correlated with their orientation states. The major symmetry axes of skew stretched polycarbonate films tend to move toward the second stretching direction as increasing second stretching ratio. The chain orientation behavior of these films exhibit increasing uniaxial orientation character at high second stretching ratio. The anisotropic characters of tensile modulus and yield stress of skew stretched films follow a linear relation with the magnitude of chain orientation within our stretching range.

** Mail address: Prof. Dr. James L. White, Institute of Polymer Engineering, University of Akron, Akron, Ohio 44325-0301, U.S.A.
Received: 1991-2
Accepted: 1991-4
Published Online: 2013-05-27
Published in Print: 1992-05-01

© 1992, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Continuous Mixing and Compounds
  4. Starve-fed Flow in Co-Rotating Twin Screw Extruders
  5. Process for Improvement in Toughness of Unsaturated Polyester with Elastomer
  6. Mechanical Properties of Thermoplastic Polyurethane Blends and Copolymers of Styrene and Acrylonitrile
  7. Extrusion
  8. Mixing on Melting in Single Screw Extrusion
  9. Numerical Study of Slip at the Walls in the Extruder
  10. Elimination of Sag in Plastic Pipe Extrusion
  11. Fibers and Film
  12. Issues Concerning the Rate of Heat Transfer from a Spinline
  13. Skew Stretched Polycarbonate Films
  14. Molding
  15. Molecular Orientation in Injection-Molded Polypropylene Copolymers with Ethylene
  16. Melt-recrystallization of Talc-filled Polypropylene Injection Moldings
  17. Processing Characteristics of Thermoplastic Sheet Composites
  18. Rapid Communication of Recent Advances
  19. The Face-relief Strategy for Design of Profile Dies
https://doi.org/10.3139/217.920151

Articles in the same Issue

  1. Contents
  2. Contents
  3. Continuous Mixing and Compounds
  4. Starve-fed Flow in Co-Rotating Twin Screw Extruders
  5. Process for Improvement in Toughness of Unsaturated Polyester with Elastomer
  6. Mechanical Properties of Thermoplastic Polyurethane Blends and Copolymers of Styrene and Acrylonitrile
  7. Extrusion
  8. Mixing on Melting in Single Screw Extrusion
  9. Numerical Study of Slip at the Walls in the Extruder
  10. Elimination of Sag in Plastic Pipe Extrusion
  11. Fibers and Film
  12. Issues Concerning the Rate of Heat Transfer from a Spinline
  13. Skew Stretched Polycarbonate Films
  14. Molding
  15. Molecular Orientation in Injection-Molded Polypropylene Copolymers with Ethylene
  16. Melt-recrystallization of Talc-filled Polypropylene Injection Moldings
  17. Processing Characteristics of Thermoplastic Sheet Composites
  18. Rapid Communication of Recent Advances
  19. The Face-relief Strategy for Design of Profile Dies
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