Abstract
The condensed phase kinetic deuterium isotope effect (KDIE) approach directly determines the overall rate-controlling mechanistic step of an energetic material’s complex thermochemical decomposition process. This second paper discusses extending the KDIE approach into progressively more drastic high temperature/pressure/rate regimes encountered with pyrolytic decomposition/deflagration, combustion, thermal explosion, and detonation incidents in order to determine the rate-controlling step of each. This rate-controlling step provides a common basis for comparing the mechanistic similarities or differences among these high energy incidents; and possible relationships between the thermochemical decomposition process and higher order combustion or explosion incidents are described for HMX, RDX, TATB, and TNT. The KDIE determined rate-controlling step between a pure nitramine compound and a formulated energetic material also is compared.
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