High-Yielding and Continuous Fabrication of Nanosized CL-20-Based Energetic Cocrystals via Electrospraying Deposition

Abstract

Energetic cocrystals, especially CL-20-based cocrystals, have attracted a wide range of attention due to their low sensitivity and impressive detonation performance. In this study, a series of nanosized CL-20-based energetic cocrystals were successfully fabricated by electrospray deposition. For CL-20/TNT nanococrystals, the influence of different solvents on the morphology and crystal structure of as-prepared cocrystals were investigated. The results showed that all the electrosprayed CL-20/TNT samples were partial formation of cocrystals and particles obtained from ketone had smaller size than those obtained from ethyl solvents. In contrast, electrosprayed CL-20/DNB nanococrystals had completely formed the cocrystal structure proved by DSC and PXRD. Moreover, the terahertz (THz) result confirmed the formation of intermolecular hydrogen bonds. Additionally, we have fabricated the CL-20/TNB cocrystals for the first time by using electrospray method. The PXRD and DSC results confirmed the formation of this...