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The Effect of Drawing and Annealing Conditions on the Structure and Properties of Bacterial Poly(3-hydroxybutyrate-co-3 hydroxyvalerate) Fibers

  • T. Yamamoto , M. Kimizu , T. Kikutani , Y. Furuhashi and M. Cakmak
Published/Copyright: June 3, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 12 Issue 1

Abstract

The effect of drawing and annealing on structure development and resulting properties of bacterial poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (P(3HB-co-3HV)) fibers have been investigated. Melt spun and subsequently drawn and annealed fibers were characterized by wide-angle and small-angle X-ray scattering techniques. WAXS studies revealed that these fibers possess bimodal chain orientation with two populations of crystals: in the first population the chain axes are oriented primarily along the fiber axis and in the second population these chain axes are oriented in the transverse direction to the fiber axis. In the latter crystals, a- and b-axes are randomly distributed around their c-axes. At the annealing temperature of 100° C, the relative population of the crystals oriented normal to the fiber axis was found to be large and their proportion decreases with the increase of annealing temperature. SAXS patterns were found to accompany the changes observed in the WAXS patterns. The tensile strength of these fibers improved by the increase of the proportion of the transversely oriented chains.

* Mail address: Prof. M. Cakmak, Polymer Engineering Institute. The University of Akron, Akron, OH 44325, USA
Received: 1995-3-16
Accepted: 1996-7-30
Published Online: 2013-06-03
Published in Print: 1997-03-01

© 1997, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Screw Extrusion
  6. Upgrading Recycled HDPE by Rheometer-Controlled Crosslinking
  7. Blend Morphology of Linear Low Density Polyethylene and Polystyrene in a Non-Intermeshing Twin Screw Extruder
  8. Mixing
  9. A Study on the Reactive Compatibilization of a PBT/LCP Blend: Catalyst Effect
  10. Influence of Processing Temperature on the Morphological and Mechanical Properties of a PC/TLCP Blend
  11. Fibers
  12. The Effect of Drawing and Annealing Conditions on the Structure and Properties of Bacterial Poly(3-hydroxybutyrate-co-3 hydroxyvalerate) Fibers
  13. Numerical Analysis of Cooling Air Systems in Film Blowing
  14. Moulding
  15. On the Simulation of Thermoplastic Injection Moulding Process
  16. Molding
  17. Rheology of Layered Thermoplastic Matrix Composites during Compression Molding
  18. Studies of the Trans-Quinacridone Nucleation of Poly-(ethylene-b-propylene)
  19. The Role of Long Molecules and Nucleating Agents in Shear Induced Crystallization of Isotactic Polypropylenes**
https://doi.org/10.3139/217.970029

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial
  5. Screw Extrusion
  6. Upgrading Recycled HDPE by Rheometer-Controlled Crosslinking
  7. Blend Morphology of Linear Low Density Polyethylene and Polystyrene in a Non-Intermeshing Twin Screw Extruder
  8. Mixing
  9. A Study on the Reactive Compatibilization of a PBT/LCP Blend: Catalyst Effect
  10. Influence of Processing Temperature on the Morphological and Mechanical Properties of a PC/TLCP Blend
  11. Fibers
  12. The Effect of Drawing and Annealing Conditions on the Structure and Properties of Bacterial Poly(3-hydroxybutyrate-co-3 hydroxyvalerate) Fibers
  13. Numerical Analysis of Cooling Air Systems in Film Blowing
  14. Moulding
  15. On the Simulation of Thermoplastic Injection Moulding Process
  16. Molding
  17. Rheology of Layered Thermoplastic Matrix Composites during Compression Molding
  18. Studies of the Trans-Quinacridone Nucleation of Poly-(ethylene-b-propylene)
  19. The Role of Long Molecules and Nucleating Agents in Shear Induced Crystallization of Isotactic Polypropylenes**
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