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FRANCESCO PAOLO LA MANTIA

On the role of extensional flow in morphology and property modifications of MWCNT/polyamide-based fibres

  • Autori: Dintcheva, N; Arrigo, R; Nasillo, G; Caponetti, E; La Mantia, FP
  • Anno di pubblicazione: 2011
  • Tipologia: Articolo in rivista (Articolo in rivista)
  • Parole Chiave: extensional flow; carbon nanotubes; polyamide-based fibres
  • OA Link: http://hdl.handle.net/10447/56200

Abstract

Unfilled and MWCNT-filled PA fibers are prepared and the effect of the extensional flow on their mechanical performance and morphological variations is investigated. Morphological analyses using SEM, TEM, and SAXS suggest a stronger orientation of the MWCNTs along the fiber direction with increasing extensional flow. A particular MWCNT bundle formation in the PA drawn nanocomposite fibers is observed for the first time, and a pull-out of the central nanotube in some bundles is noted. The maintenance of the “shish-kebab” structure upon extensional flow is responsible for the mechanical improvements and dimensional stability in MWCNT-filled PA fibers.