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On the morphology of high-modulus and high-strength polyethylene filaments

  • A. Schaper
  • E. Walenta
  • E. Schulz
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 78)

Abstract

Microstructural investigations of surface-grown and surface-grown/zone-drawn ultra-high molecular weight polyethylene (UHMWPE) fibers were carried out by scanning- and transmission-electron microscopy (SEM, TEM), by optical diffraction (OD) of the TEM images, and by small angle X-ray scattering (SAXS). The as-spun filaments show a “shish kebab” morphology characterized by a periodic arrangement of the overgrowths. During zone-drawing the shish kebabs are transformed into well-aligned needle crystals. At medium-draw ratios this is accompanied by considerable improvement of the mechanical properties, whereas draw-ratios exceeding approximately 2.5 lead to a reduction in strength and modulus due to “overdrawing” effects.

Key words

Surface-grown polyethylene zone-drawing fibrillar morphology mechanical properties 

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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1998

Authors and Affiliations

  • A. Schaper
    • 1
    • 2
  • E. Walenta
    • 1
    • 2
  • E. Schulz
    • 1
    • 2
  1. 1.Institut für Polymerenchemie “Erich Correns”Akademie der Wissenschaften der DDRTeltow-SeehofG.D.R.
  2. 2.‘Erich Correns’ Institute of Polymer ChemistryAcademy of SciencesTeltow-SeehofG.D.R.

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