Polyamide 6 nanofibrous Nonwovens via Electrospinning

Enrico Marsano*, Lijo Francis, Francesco Giunco

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Electrospinning of Polyamide 6 (PA 6) in 2,2,2-trifluoroethanol (TFE) was investigated for the fabrication of nanofibrous nonwoven membranes useful for separation systems. The effects of solution characteristics such as concentration and conductivity as well as the effects of processing conditions such as relative humidity and applied potential on the resultant nonwoven fibers were studied. By changing the relative humidity of the electrospinning chamber and the conductivity of the solvent, it is possible to modulate the fiber's size and consequently the porosity of the mats. The morphology of the electrospun PA 6 nanofibers was observed by scanning electron microscopy. The mechanical properties of the nanofibers were also studied. The results showed that PA 6 nanofibers having a diameter ranging from 100 to 600 nm, has been successfully prepared. The electrospun PA 6 nanofiber mats show good mechanical properties, such as a high-tensile strength (12 ± 0.2 MPa) and elongation (300% ± 50%). The strength of the web was high enough to use as filter without the need of any supporting matrix and could be applicable in the field of self-supporting membranes. The X-ray and DSC analyses of the PA 6 electrospun fibers show the presence of the γ form of PA 6 crystallite that is usually obtained in the condition where a high stress of the fibers is applied.

Original languageEnglish (US)
Pages (from-to)1754-1765
Number of pages12
JournalJournal of Applied Polymer Science
Volume117
Issue number3
DOIs
StatePublished - Aug 1 2010

Keywords

  • Electrospinning
  • Membranes
  • Nanofibers
  • Orientation
  • Polyamides

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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