Effect of Sodium Alginate on the Morphology and Properties of High Energy Insensitive Explosive TKX‐50

Abstract

Dihydroxylammonium 5,5′‐bistetrazole‐1,1′‐diolate (TKX‐50) is an energetic ion salt with high energy and low mechanical sensitivity. However, its poor morphology and low binding ability with conventional binders have significantly limited its application. In the present work, we reported a novel strategy to improve the morphology and surface properties of TKX‐50 using sodium alginate (SA) as the modifier by the anti‐solvent method. The results of imaging characterization indicated that SA greatly affected both crystal habit and morphology of TKX‐50, resulting in modified TKX‐50 granulars with low aspect ratios. The formation mechanism was explored by the molecular dynamics simulation. The XPS and SEM characterizations also revealed that SA adhered onto TKX‐50 surface to form a coating layer. The non‐isothermal kinetic parameters were calculated from DSC results. Our work has provided a new strategy to improve the morphology and surface properties of TKX‐50 for its practical applications.

Study on the blast impulse characters of high explosive charge with reactive metal casing

“…The changing trend of shock wave overpressure with time in Figure 5 is the same as that in the literature [24], indicating that the change curve of air shock wave overpressure with time in each experiment has good repeatability.…”

Three-dimensional microspheric g-C3N4coupled byBroussonetia papyriferabiochar: facile sodium alginate immobilization and excellent photocatalytic Cr(iv) reduction

“…[36][37][38] The similar peak patters in SABC spheres as SA, SAB, and SAC implies the successful preparation of g-C 3 N 4 and biochar composite immobilized into alginate. [41][42][43] The above results indicated that the composite possessed a sufficient number of active groups on its surface, which was expected to increase pollutant removal efficiency.…”

Development, Physical–Chemical Characterization, and Molecular Docking Simulations of Ursolic Acid–Sodium Alginate Complexes

“…The rectangular UA crystals are no longer observed in the complexes, which indicates the significant decrease of UA crystallinity. Other studies also find that the morphology of SA complexes can be influenced by the solvent-mediated process …”

“…The morphology of UA, carriers, PM, and complexes was observed using a scanning electron microscope (s4800, Hitachi Instruments Co., Ltd., Japan). 40 The powders were fixed on a sample port using carbon double-sided adhesive tape and coated with gold (100 s) using voltages from 10 to 25 kV for scanning to obtain conductive samples.…”

“…Other studies also find that the morphology of SA complexes can be influenced by the solvent-mediated process. 40 Antioxidant Activity. The antioxidant efficiency was tested by DPPH free radical reducing power and the pyrogallol auto-oxidation method.…”