Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 9, Pages 6049-6053Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am404583h
Keywords
nanothermite; pyrolant; energetic material; electrospinning; nanoparticles
Funding
- Air Force Research Laboratory
- Eglin Air Force Base
- U.S. Air Force Academy [FA7000-10-2-0038]
- US Army Research Office [W911NF1110439]
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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.
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