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Nanocrystallisation of Ammonium DiNitramide (ADN) by Spray Flash Evaporation (SFE)
Author(s) -
Berthe JeanEdouard,
Schnell Fabien,
Boehrer Yannick,
Spitzer Denis
Publication year - 2018
Publication title -
propellants, explosives, pyrotechnics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.56
H-Index - 65
eISSN - 1521-4087
pISSN - 0721-3115
DOI - 10.1002/prep.201800039
Subject(s) - ammonium perchlorate , crystallinity , ammonium bromide , relative humidity , chemistry , ammonium acetate , materials science , crystallization , chemical engineering , analytical chemistry (journal) , nuclear chemistry , propellant , chromatography , composite material , organic chemistry , pulmonary surfactant , biochemistry , physics , engineering , thermodynamics , high performance liquid chromatography
Ammonium DiNitramide (ADN) is an interesting oxidizer to replace ammonium perchlorate in the composition of solid propellants. In this study, Spray Flash Evaporation (SFE) is presented as a new technology to enhance stability of ADN by crystallization of nanoparticles. The crystallinity and purity of the compound was confirmed by X‐Ray Diffraction and Raman analysis. An average diameter of spherical particles around 32 nm (solution of ethyl acetate) and 34 nm (solution of methyl acetate) was measured by Scanning Electronic Microscopy (SEM). Furthermore, the downsizing to nanoscale induces a slower moisture absorption kinetic under 55 % of relative humidity, a reduction of the critical diameter of detonation and the desensitization to impact.