Creation of energetic biothermite inks using ferritin liquid protein

Joseph M. Slocik, Ruel McKenzie, Patrick B. Dennis and Rajesh R. Naik ()
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Joseph M. Slocik: Materials and Manufacturing Directorate, Air Force Research Lab
Ruel McKenzie: Materials and Manufacturing Directorate, Air Force Research Lab
Patrick B. Dennis: Materials and Manufacturing Directorate, Air Force Research Lab
Rajesh R. Naik: 711th Human Performance Wing, Air Force Research Lab

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Energetic liquids function mainly as fuels due to low energy densities and slow combustion kinetics. Consequently, these properties can be significantly increased through the addition of metal nanomaterials such as aluminium. Unfortunately, nanoparticle additives are restricted to low mass fractions in liquids because of increased viscosities and severe particle agglomeration. Nanoscale protein ionic liquids represent multifunctional solvent systems that are well suited to overcoming low mass fractions of nanoparticles, producing stable nanoparticle dispersions and simultaneously offering a source of oxidizing agents for combustion of reactive nanomaterials. Here, we use iron oxide-loaded ferritin proteins to create a stable and highly energetic liquid composed of aluminium nanoparticles and ferritin proteins for printing and forming 3D shapes and structures. In total, this bioenergetic liquid exhibits increased energy output and performance, enhanced dispersion and oxidation stability, lower activation temperatures, and greater processability and functionality.

Date: 2017
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DOI: 10.1038/ncomms15156

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