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Determination of Deterrent Profiles in Nitrocellulose Propellant Grains Using Confocal Raman Microscopy
Author(s) -
Trewartha Steve,
Shapter Joseph,
Gibson Christopher T.,
Mikajlo Elisabeth,
Jones Ashley
Publication year - 2011
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.201000081
Subject(s) - nitrocellulose , propellant , diffusion , raman spectroscopy , confocal microscopy , analytical chemistry (journal) , drop (telecommunication) , materials science , perforation , confocal , raman microscope , microscopy , chemistry , membrane , composite material , optics , chromatography , raman scattering , thermodynamics , telecommunications , biochemistry , physics , organic chemistry , computer science , punching
The diffusion profile of dinitrotoluene deterred nitrocellulose based small arms propellants is investigated with Confocal Raman microscopy. The diffusion profile in all samples was found to be non‐Fickian Case II diffusion – a steady concentration with a sharp drop. Diffusion depth from the outside surface was found to be much greater than the interior perforation surface. A strong correlation was found between the perforation size of samples and their inside edge diffusion depth, while the outside surface was found to be more dependent on total diameter and deterrent concentration. Samples were also artificially aged to investigate movement of the deterrent over time.