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Интеллектуальная Система Тематического Исследования НАукометрических данных |
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Smart Energetic Nano-Sized Co-Crystals: Exploring Fast Structure Formation and Decompositionстатья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: David Doblas, Martin Rosenthal, Manfred Burghammer, Dmitry Chernyshov, Denis Spitzer, Ivanov Dimitri A.
- Журнал: Crystal Growth and Design
- Год издания: 2016
- Издательство: American Chemical Society
- Местоположение издательства: United States
- DOI: 10.1021/acs.cgd.5b01425
- Аннотация: The interest toward co-crystals of energetic materials explains by the fact that they can offer better thermodynamic stability and tunable sensitivity and detonation performance. In the present work, a combination of DSC, ultra-fast chip calorimetry, high-resolution X-ray powder diffraction and nano-focus X-ray diffraction was employed to investigate the thermal behavior and structure formation in nano-sized co-crystals of CL-20 with HMX and TNT prepared using Spray Flash Evaporation (SFE). The CL-20/HMX co-crystal does not reveal any thermal transitions up to the thermal decomposition. In contrast, CL-20/TNT exhibits an irreversible melting transition. Upon melting, it can rapidly crystallize on heating or, at a slower pace, at room temperature to form homo-crystals of γCL-20, the polymorph stable at high temperature. These observations constitute the first evidence of a CL-20 crystallization process, which occurs from the melt and not from solution. The solid-liquid phase separation occurring during heating of a CL-20/TNT melt may explain its complex thermal decomposition process as compared to that of CL-20/HMX: the main exothermic peak of decomposition can be assigned to that of a pure CL-20.
- Добавил в систему: Иванов Дмитрий Анатольевич