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Investigation of Structure and Properties in Biaxially Stretched Poly(butylene terephthalate) Films

  • K.-J. Song and J.L. White
Published/Copyright: June 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 15 Issue 4

Abstract

Effects of deformation history on the development of structure and properties in biaxially stretched poly(butylene terephthalate) (PBT) films are described. PBT cast films are stretched at two temperatures: 65°C and 90°C, with varying draw ratios. The refractometer and X-ray scattering techniques characterize the resultant films. As-stretched films have crystals of small sizes, in which the α crystals are appreciably larger and oriented more than the β phase. Films that are stretched at the low temperature, on the other hand, exhibit higher orientations of both the overall and amorphous chains. Annealing of the films under constraint causes the crystalline phase to undergo perfection and transition. A model of crystalline morphology is presented which describes the mechanical anisotropy present in biaxially oriented PBT films.

* Mail address: Prof. Dr. J. L. White, Institute of Polymer Engineering, University of Akron, Akron OH 44325-0301, USA
Received: 1999-3-22
Accepted: 2000-7-1
Published Online: 2013-06-06
Published in Print: 2000-12-01

© 2000, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Editorial
  2. Seventh of a Series: Pioneer of Carbonaceous Pitch Processing Sugio Otani
  3. Invited Paper
  4. Injection Blow Molding Technology for Polyethylene Terephthalate
  5. Screw Extrusion/Mixing
  6. A New Polymer Processing Technology for Polymer Blends with Unmatched Viscosity: Solid-State Shear Pulverization (S3P)
  7. In-Line Density Monitoring of Rigid PVC Foam during Extrusion Process
  8. In-Process R eometry Studies of LDPE Compounds
  9. In-Process R eometry Studies of LDPE Compounds
  10. Rheological and Morphological Properties of Immiscible Blends and Microfiber Preparation from the Blends
  11. Reactive Extrusion
  12. Development of a Direct Polycondensation Process for Poly (L-lactic acid)
  13. Fiber and Film
  14. Radially Dependent Stress and Modeling of Solidi cation in ilament Melt Spinning
  15. Structure Development in Melt Spinning Syndiotactic Polypropylene and Comparison to Isotactic Polypropylene
  16. Fibers and Films
  17. Investigation of Structure and Properties in Biaxially Stretched Poly(butylene terephthalate) Films
  18. Molding
  19. Filling and Postfilling Analysis of Injection/Compression Molding
https://doi.org/10.3139/217.1609

Articles in the same Issue

  1. Editorial
  2. Seventh of a Series: Pioneer of Carbonaceous Pitch Processing Sugio Otani
  3. Invited Paper
  4. Injection Blow Molding Technology for Polyethylene Terephthalate
  5. Screw Extrusion/Mixing
  6. A New Polymer Processing Technology for Polymer Blends with Unmatched Viscosity: Solid-State Shear Pulverization (S3P)
  7. In-Line Density Monitoring of Rigid PVC Foam during Extrusion Process
  8. In-Process R eometry Studies of LDPE Compounds
  9. In-Process R eometry Studies of LDPE Compounds
  10. Rheological and Morphological Properties of Immiscible Blends and Microfiber Preparation from the Blends
  11. Reactive Extrusion
  12. Development of a Direct Polycondensation Process for Poly (L-lactic acid)
  13. Fiber and Film
  14. Radially Dependent Stress and Modeling of Solidi cation in ilament Melt Spinning
  15. Structure Development in Melt Spinning Syndiotactic Polypropylene and Comparison to Isotactic Polypropylene
  16. Fibers and Films
  17. Investigation of Structure and Properties in Biaxially Stretched Poly(butylene terephthalate) Films
  18. Molding
  19. Filling and Postfilling Analysis of Injection/Compression Molding
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