Abstract
Differential scanning calorimetry and isothermal calorimetry are used to study the kinetics of the α → β polymorphic transformation (PT) in 1,1-diamino-2,2-dinitroethylene (DADNE). The kinetics of the β → α PT in DADNE is investigated by infrared spectrophotometry. The α → β phase transition is described by the first-order autocatalysis equation. The activation energy and the rate constant are determined. The rate of the β → α PT is described by the kinetic law for two parallel first-order processes. The rate constants for these processes are obtained.
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Original Russian Text © V.V. Zakharov, N.V. Chukanov, A.D. Chervonnyi, S.A. Vozchikova, B.L. Korsounskii, 2014, published in Khimicheskaya Fizika, 2014, Vol. 33, No. 11, pp. 47–54.
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Zakharov, V.V., Chukanov, N.V., Chervonnyi, A.D. et al. Kinetics of reversible polymorphic transition in energetic materials. Phase transitions α → β and β → α in 1,1-diamino-2,2-dinitroethylene. Russ. J. Phys. Chem. B 8, 822–828 (2014). https://doi.org/10.1134/S1990793114110104
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DOI: https://doi.org/10.1134/S1990793114110104