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Melt-spun poly(tetrafluoroethylene) fibers

Goessi, Matthias ; Tervoort, Theo ; Smith, Paul

In: Journal of Materials Science, 2007, vol. 42, no. 19, p. 7983-7990

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    Titre
    • Melt-spun poly(tetrafluoroethylene) fibers
    Auteur
    • Goessi, Matthias. Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
    • Tervoort, Theo. Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
    • Smith, Paul. Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Journal of Materials Science, 2007, vol. 42, no. 19, p. 7983-7990. Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com
    Autre version électronique
    Classification
    • Technologie, Sciences de l'ingénieur
    Identifiant OAI-PMH
    • oai:doc.rero.ch:322430
    Summary
    The recent discovery of melt-processable poly(tetrafluoroethylene) (PTFE) allows for common thermoplastic-polymer processing technologies to be applied to this unique polymer, which heretofore was considered to be highly intractable. In this paper, we report simple melt-spinning of monofilaments of a set of melt-processable (modified) PTFE grades with weight-average molar masses (M w) ranging from 77 to 292kg/mol. Fibers were spun at 380°C at draw-down ratios of up to 2,750, yielding filaments of linear densities as low as 0.8tex, corresponding to a diameter of ∼20μm. The maximum Young's modulus and tensile strength of as-spun fibers produced in this study were 91.7cN/tex (1,972MPa) and 12.0cN/tex (258MPa), respectively, accompanied by a strain to break of 24%