γ‐Cyclodextrin Nitrate/CL‐20 Complex: Preparation and Properties
Paweł Maksimowski , Agnieszka Grzegorczyk , Katarzyna Cieślak , Tomasz Gołofit , Michał Chmielarek , Waldemar Tomaszewski , Wojciech Pawłowski
AbstractGamma‐cyclodextrin/CL‐20 (γ‐CD/CL‐20) inclusion complex was prepared and characterized by infrared and 1H NMR spectroscopy. The study findings point to a weak interaction of CL‐20 protons with H3 and H5 protons, however relatively intense interactions with OH groups in a γ‐CD molecule, which allows to conclude that a CL‐20 molecule does not penetrate completely the toroid cavity formed by γ‐CD. The resulting complex was subject to nitration with 100 % nitric acid. Analysis of the 1H NMR spectrum demonstrated that an average of 21.6 OH groups in the starting γ‐CD underwent esterification. The nitrated complex is characterized by a higher density (1.81 g/cm3), and the sensitivity to impact (5 J) and friction (200 N) comparable to the starting complex. Thermogravimetric analysis of the nitrated γ‐Cyclodextrin/CL‐20 complex pointed to a two‐phase decomposition at 194 and 339 °C with a total significant exothermic effect amounting to 3230 J/g.
|Journal series||Propellants, Explosives, Pyrotechnics, ISSN 0721-3115, (N/A 70 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane, CL-20, γ-Cyclodextrin/Cl-20 complex, γ-Cyclodextrin nitrate/Cl-20 complex|
|Score||= 70.0, 03-02-2020, ArticleFromJournal|
|Publication indicators||= 0; = 0; : 2016 = 1.247; : 2018 = 1.634 (2) - 2018=1.973 (5)|
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