Sublimation properties of pentaerythritol tetranitrate single crystals doped with its homologs

Sanjoy K. Bhattacharia, Amitesh Maiti, Richard H. Gee, Brandon L. Weeks

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Pentaerythritol tetranitrate (PETN) is a secondary explosive used extensively in military and commercial applications. Coarsening of PETN during long-term storage changes the physical properties such as surface area and particle morphology which are important factors in initiation and performance. Doping of impurities was proposed to slow the coarsening process since impurities were shown to modify both the kinetic and thermodynamic properties. In this paper, we discuss how doping of PETN with its homologs of dipentaerythritol hexanitrate (diPEHN) and tripentaerytritol octanitrate (triPEON) affect kinetic and thermodynamic parameters. Pure and homolog doped PETN single crystals were prepared by solvent evaporation in acetone at room temperature. Doping concentrations for this study were 1000 ppm, 5000 ppm, and 10000 ppm. Activation energy and vapor pressure of pure and doped PETN single crystals were obtained from thermogravimetric analysis data.

Original languageEnglish
Pages (from-to)563-568
Number of pages6
JournalPropellants, Explosives, Pyrotechnics
Volume37
Issue number5
DOIs
StatePublished - Oct 2012

Keywords

  • DiPEHN
  • Kinetic and thermodynamic property
  • PETN
  • Single crystal
  • TriPEON
  • Vapor pressure

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