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.
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© 1998 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Schaper, A., Walenta, E., Schulz, E. (1998). On the morphology of high-modulus and high-strength polyethylene filaments. In: Chudáček, I. (eds) Relationships of Polymeric Structure and Properties. Progress in Colloid & Polymer Science, vol 78. Steinkopff. https://doi.org/10.1007/BFb0114371
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DOI: https://doi.org/10.1007/BFb0114371
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