Fabrication, characterization, and energetic properties of metallized fibers

Nicholas A. Clayton, Keerti S. Kappagantula, Michelle L. Pantoya, Sharon C. Kettwich, Scott T. Iacono

Research output: Contribution to journalArticle

22 Scopus citations

Abstract

Polystyrene fibers loaded with an energetic blend of nanoaluminum (n-Al) and perfluoropolyether (PFPE) were successfully fabricated via electrospinning producing nanothermite fabrics. Fibers were generated with loadings up to 17 wt % n-Al/PFPE incorporated into the fiber. Microscopy analysis by SEM and TEM confirm a uniform dispersion of PFPE treated n-Al on the outside and inside of the fibers. Metallized fibers were thermally active upon immediate ignition from a controlled flame source. Thermal analysis by differential scanning calorimetry (DSC) found no change in glass transition temperature when comparing pure polystyrene fibers with fibers loaded up to 17 wt % n-Al/PFPE. Thermal gravimetric analysis (TGA) revealed a shift in decomposition temperatures to lower onsets upon increased loadings of n-Al/PFPE blends, consistent with previous studies. Flame propagation studies confirmed that the metallized fibers are pryolants. These metallized fibers are a recent development in metastable intermolecular composites (MICs) and details of their synthesis, characterization, and thermal properties are presented.

Original languageEnglish
Pages (from-to)6049-6053
Number of pages5
JournalACS Applied Materials and Interfaces
Volume6
Issue number9
DOIs
StatePublished - May 14 2014

Keywords

  • electrospinning
  • energetic material
  • nanoparticles
  • nanothermite
  • pyrolant

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