Polymorphism in a Nonsensitive-High-Energy Material: Discovery of a New Polymorph and Crystal Structure of 4,4′,5,5′-Tetranitro-1H,1′H-[2,2′-biimidazole]-1,1′-diamine
Source abstract
Abstract
Polymorphism has attracted significant attention in the area of pharmaceutical chemistry and materials chemistry. For energetic materials, polymorphism may affect their physical performances such as energy, sensitivity, thermal stability, etc. 4,4′,5,5′-Tetranitro-1H,1′H-[2,2′-biimidazole]-1,1′-diamine (DATNBI) exhibits high density (d: 1.93 g cm–3), superior detonation performance (D: 9063 m s–1) and comprehensive sensitivity (IS: 15 J), suggesting it is a nonsensitive-high-energy material (NSHEM) compared with HMX as a sensitive-high-energy material (SHEM). In this work, a new polymorph of DATNBI was discovered for the first time. To elucidate its phase transformation behavior and morphology-performance relationship, single X-ray diffraction (SXRD), variable temperature powder X-ray diffraction (VT-PXRD), Raman spectroscopy, differential scanning calorimetry-thermal gravity (DSC-TG), and scanning electron microscopy (SEM) were characterized thoroughly. Solvation and temperature effects on the polymorph formation of DATNBI were also investigated.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Energetic Materials and Combustion · Thermal and Kinetic Analysis · Crystallography and molecular interactions
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Chemical Materials, Chinese Academy of Engineering Physics, Mianyang, 621900, P. R. China
Funding
the Science Challenge Project
References (49)
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