Construction and Preparation of the Novel ADN/CL-20 Cocrystal via Directional Hydrogen Bonding Design for Turning Hygroscopicity

• DOI: 10.1021/acs.inorgchem.4c02019
• Publication Date: 2024-08-23T17:41:19Z
• Authors: Hao-jie Li; Long Li; Jian Sun; Ji-min Han; Li Yang; Xiao-ting Ren; Wen-chao Tong
• Keywords: Cocrystal

Ammonium dinitramide (ADN), as a novel and environmentally friendly oxidizer, has strong hygroscopicity when exposed to high-humidity air, which seriously hinders its application in solid propellants. Modification of oxidizers by cocrystallization is an effective strategy improve the energetic components. In this paper, theoretical simulation ADN/CL-20 cocrystals was developed via directional hydrogen bonding design establish cocrystal with improved hygroscopicity. Intermolecular interaction analyses reveal that bonds van der Waals interactions synergistically lead formation cocrystals. The prepared experimentally spray drying self-assembly technique, corresponding thermal analysis sensitivity properties were conducted illustrate stability high safety. Furthermore, critical relative humidity (CRH) measurement carried out evaluate cocrystal, exhibiting certain degree antihygroscopic effect CRH 65%. formed between ADN CL-20 saturate ammonium ions ADN, further preventing from absorbing water molecules air. specific impulse characteristics (