Effect of a polymer binder on the extraction and crystallization-based recovery of HMX from polymer-bonded explosives

Dongwoo Kim, Hyejoo Kim, Eugene Huh, Sewon Park, Chang Ha Lee, Ik Sung Ahn, Kee Kahb Koo, Keun Deuk Lee

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Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) was separated out from polymer-bonded explosives (PBXs) by extraction with DMSO and crystallization with ethanol. The model PBX used herein was DXC-57, which is composed of HMX and Estane, a polyurethane-based binder. Crystallization at a higher degree of supersaturation (S, the ratio of concentration to solubility) lowered the possibility of the formation of the thermodynamically stable β-form HMX. Estane was found to retard the nucleation and to cause crystallization at high S. β-form HMX with purity greater than 99% was recovered from DXC-57 in over 90% yield via crystallization at S ≤ 6.26 followed by washing with THF.

Original languageEnglish
Pages (from-to)124-130
Number of pages7
JournalJournal of Industrial and Engineering Chemistry
Publication statusPublished - 2019 Nov 25


All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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