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Sublimation Properties of Pentaerythritol Tetranitrate Single Crystals Doped with Its Homologs
Author(s) -
Bhattacharia Sanjoy K.,
Maiti Amitesh,
Gee Richard H.,
Weeks Brandon L.
Publication year - 2012
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.201100114
Subject(s) - pentaerythritol tetranitrate , pentaerythritol , doping , sublimation (psychology) , materials science , thermogravimetric analysis , impurity , explosive material , solvent , kinetic energy , vapor pressure , evaporation , chemical engineering , single crystal , analytical chemistry (journal) , chemistry , thermodynamics , organic chemistry , crystallography , composite material , psychology , physics , optoelectronics , fire retardant , quantum mechanics , engineering , psychotherapist
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.