Direct laser initiation and improved thermal stability of nitrocellulose/graphene oxide nanocomposites

Abstract

We report on the enhancement and possible control of both laser ignition and burn rates of Nitrocellulose (NC) microfilms when doped with graphene oxide (GO). A Nd:YAG (1064 nm, 20 ns) laser is used to ignite GO-doped NC films at low temperatures. The effect of GO on the doping concentration of the activation energies of laser ignition and thermal stability of the NC films is studied. The activation energy of laser ignition decreases with increasing GO/NC weight ratio and attains a constant value with higher concentrations. This behavior is accompanied by an increase in the thermal stability.

Highly energetic compositions based on functionalized carbon nanomaterials

“…Upon heating, GO can readily undergo violent exothermic decomposition due to the extensive oxygenic functional groups on the basal plane ( phenol, hydroxyl, and epoxide) and at the edges (carboxylic). 165 This is also the case for rGO, which is shown to retain some oxygenic groups as a result of imperfect reduction. Therefore, rGO is also energetic, yet not as energetic as GO.…”

Forced assembly by multilayer coextrusion to create oriented graphene reinforced polymer nanocomposites

“…Because of its outstanding mechanical properties, high surface area, extraordinary electrical and thermal conductivities, graphene has been reported to have a variety of potential applications, such as nanocomposites [3,4] energy storage [5], and photonic devices [6]. However, to date, most work on graphene polymer nanocomposites has focused on isotropic or random dispersion of the graphene in the polymer matrix, giving limited reinforcement [7].…”

Dissociation of Cyclotrimethylenetrinitramine Under 1064-nm Laser Irradiation Investigated by Time-of-Flight Mass Spectrometer

“…[1,2] Optical initiation with a laser beam offers several potential advantages, such as high safety, precisely timed release, easy-to-realize multipoint ignition and initiation, no requirement to sensitivity of explosives, and more efficient energy coupling. [3,4] Understanding the mechanism of the interaction of laser and energetic materials is important to the reliability and safety of laser initiators and firing systems.…”