Journal of Physical Chemistry C
Journal of Physical Chemistry C
5 years ago

Growth and Characterization of β-RDX Single-Crystal Particles

Growth and Characterization of β-RDX Single-Crystal Particles
Yangyang Zeng, Chan Gao, Zhongping Wang, Chuanchao Zhang, Zengming Zhang, Rucheng Dai, Lin Yang, Xianxu Zheng, Xiangqi Wang
1,3,5-Trinitrohexahydro-s-triazine (RDX) single-crystal particles crystallized in the β phase have been successfully grown by sublimation–recrystallization. Synchrotron X-ray diffraction results confirm that the recrystallized products are β-RDX single crystals. Compared to the traditional solution deposition methods, the sublimation method used in this work breaks through the mass limitations during the growth of β-RDX. The distribution of α- and β-RDX on different substrates reveals that hydrophilic substrates are prone to grow β-RDX single crystals and that hydrophobic substrates prefer α-RDX single crystals. The sublimation rate dominates the growth of pure β-RDX. The mechanisms of the phase transition from β-RDX to α-RDX during the process of sublimation–recrystallization have been studied. The current results can promote the potential application of β-RDX in the propellant, explosives, and military fields.

Publisher URL: http://dx.doi.org/10.1021/acs.jpcc.7b04285

DOI: 10.1021/acs.jpcc.7b04285

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