Issue 21, 2021

An experimental and theoretical study on the growth of plate-like β-HMX crystals in the hydroxylated interlayer space

Abstract

Plate-like β-HMX crystals are grown in the hydroxylated interlayer space using a crystallization technique combining the cooling crystallization and solvent–antisolvent methods. The obtained crystals have been investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The experimental results indicate that the most morphologically important face of the plate-like β-HMX crystals is the (011) face adopting a layer-by-layer growth mode. Meanwhile, molecular dynamics (MD) simulations were performed to study the crystal morphology in HMX crystal growth in the hydroxylated interlayer space based on a modified attachment energy (MAE) model. The calculated results show that the major face is the (011) face and the interaction energies between the crystal face and the hydroxylated interlayer are in the order of (011) > (110) > (020), which agree well with the experimental results above.

Graphical abstract: An experimental and theoretical study on the growth of plate-like β-HMX crystals in the hydroxylated interlayer space

Article information

Article type
Paper
Submitted
03 Mar 2021
Accepted
04 May 2021
First published
04 May 2021

Phys. Chem. Chem. Phys., 2021,23, 12340-12349

An experimental and theoretical study on the growth of plate-like β-HMX crystals in the hydroxylated interlayer space

Y. Tao, J. Xu, H. Zhang, S. Huang, Z. Yang, J. Sun and M. Lei, Phys. Chem. Chem. Phys., 2021, 23, 12340 DOI: 10.1039/D1CP00959A

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