HP-DSC study of energetic materials. Part I. Overview of pressure influence on thermal behavior

Nikita V. Muravyev, Konstantin A. Monogarov, Anatoly A. Bragin, Igor V. Fomenkov, Alla N. Pivkina

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

High pressure differential scanning calorimetry (HP-DSC) has been used to study thermal decomposition of energetic materials, i.e., trinitrotoluene, cyclotrimethylenetrinitramine, and ammonium dinitramide. HP-DSC runs have been performed in the range of 0.1-14 MPa both in inert and oxidative environments to determine the effect of pressure on vaporization/dissociation, melting, and decomposition processes. Results reveal that the melting point linearly increase with pressure with the slope 0.12-0.15 °C/MPa. Decomposition pathways and DSC effects are highly affected by pressure, as evaluated by changes in the peak temperature, reaction heat effect, and kinetic parameters. Activation energy and pre-exponential factor values were defined for separated decomposition stages of compounds, and found to vary with pressure. Vaporization/dissociation of starting material along with secondary reactions are proposed to be the main processes affected by pressure. Obtained results reveal that HP-DSC technique is useful in determining kinetic parameters and heat effect under elevated pressures, where energetic materials are usually applied.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalThermochimica Acta
Volume631
DOIs
Publication statusPublished - 10 May 2016
Externally publishedYes

Keywords

  • Ammonium dinitramide
  • Cyclotrimethylenetrinitramine
  • Decomposition heat effect
  • Energetic materials
  • High pressure DSC
  • Isoconversional kinetics
  • Trinitrotoluene

ASJC Scopus subject areas

  • Instrumentation
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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  • Cite this

    Muravyev, N. V., Monogarov, K. A., Bragin, A. A., Fomenkov, I. V., & Pivkina, A. N. (2016). HP-DSC study of energetic materials. Part I. Overview of pressure influence on thermal behavior. Thermochimica Acta, 631, 1-7. https://doi.org/10.1016/j.tca.2016.03.018