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Cover Picture: Effect of Sodium Alginate on the Morphology and Properties of High Energy Insensitive Explosive TKX‐50 (Prop., Explos., Pyrotech. 4/2019)
Author(s) -
Dong Wenbo,
Chen Shusen,
Jin Shaohua,
Chen Minglei,
Yan Bo,
Chen Yu
Publication year - 2019
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201980401
Subject(s) - morphology (biology) , solvent , materials science , chemical physics , explosive material , ion , macromolecule , crystallography , chemical engineering , chemistry , organic chemistry , geology , paleontology , engineering , biochemistry
The cover picture shows the computer calculated charge distribution of TKX‐50 in the background. At the center of the picture both the simulation model and the schematic diagram of the interaction mechanism between polymer and planes of TKX‐50 are shown. At the very top free ions of TKX‐50 dissolved in solvent are depicted. In the middle you see a segment of a sodium alginate (SA) macromolecule which is composed of G and M units in an ionized state. Carboxyl groups carry negative charges which are the interaction sites of SA. In the bottom the atom arrangement of the (020) plane of TKX‐50 is shown. On the right side, two SEM pictures show the experimental results: The top one exhibits the typical morphology of TKX‐50 crystals in water solvent, a cluster of rod‐like crystals. The bottom one shows the morphology of TKX‐50 processed with SA. Here, granular crystals could be observed, a great and favorable change in morphology. Scale bar and related information are placed next to the corresponding SEM images. Details are discussed in the article by Wenbo Dong et al. on page 413 ff.