Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazocine (HMX) particles were prepared through solvent-antisolvent crystallization at room temperature by using dimethyl sulfoxide and ethanol as a solvent and an antisolvent, respectively. Estane, which has been used as a polymer binder in polymer-bound explosives, was added to retard nucleation and inhibit crystal growth. The particles were characterized using scanning electron microscopy, X-ray diffraction analysis, nuclear magnetic resonance spectroscopy, and thermogravimetric analysis. Owing to the nucleation at a high degree of supersaturation, thermodynamically unstable submicron non-β-form HMX particles were formed initially. Their morphology was changed to β-form; the submicron size was maintained while the particles were entrapped in Estane. Estane was removed by washing with tetrahydrofuran, and the purity of the submicron β-form HMX particles was greater than 99 %.

中文翻译：

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Estane 辅助通过抗溶剂结晶制备亚微米 β 型 HMX 颗粒

以二甲亚砜和乙醇分别作为溶剂和反溶剂，在室温下通过溶剂-反溶剂结晶制备八氢-1,3,5,7-四硝基-1,3,5,7-四唑辛（HMX）颗粒。Estane 已被用作聚合物结合炸药中的聚合物粘合剂，用于阻止成核和抑制晶体生长。使用扫描电子显微镜、X 射线衍射分析、核磁共振光谱和热重分析对颗粒进行表征。由于在高度过饱和下成核，最初形成了热力学不稳定的亚微米非 β 型 HMX 颗粒。它们的形态变成了β型；当颗粒被困在 Estane 中时，亚微米尺寸保持不变。用四氢呋喃洗涤除去Estane，