Articles written in Bulletin of Materials Science
Volume 44 All articles Published: 1 March 2021 Article ID 0053
Strain-induced structural change and mechanical properties of 1,3,5-triamino-2,4,6-trinitrobenzene probed by neutron diffraction
HAO LI LIANGFEI BAI XIPING CHEN LEI XIE JUN CHEN ZHIJIAN YANG LEIMING FANG YUANHUA XIA GUANGAI SUN JIAN GONG
TATB (1,3,5-triamino-2,4,6-trinitrobenzene) is a widely used insensitive
high-energy explosive. It is significant to study its structural evolution in
order to get a credible understand of its properties and performances.
Direct mechanical tests such as hardness tests are useful approaches to get
information about its mechanical properties and shed light upon the microstructures.
However, due to the poor solubility of TATB to most solvents, it is hard to produce
large crystals for such tests. Fortunately, microcosmic approaches such as powder
diffraction can reinforce it and has low requirement on samples. In this study,
Volume 45 All articles Published: 2 June 2022 Article ID 0099
Oxidation modification of fluorinated graphite and its reaction mechanism
HAO LI SONG BI XIAOJING YUAN ZHAOHUI LIU YONGZHI SONG JINJIN WANG GENLIANG HOU
The Hummers method was employed in this study to oxidize fluorinated graphite. In addition, the pre- and post-chemical compositions and microstructure were characterized and analysed to explore the modification mechanism. Oxidized fluorinated graphite (OFG) with lamellar structure and variable oxygen content was obtained by oxidation method. Primarily, the oxidative modification under KMnO$_4$ is that MnO$_3$ $^+$ as Lewis acid would catalyse the activation ofthe carbon-fluorine bond, which then breaks to release a fluorine ion. Secondly, the unsaturated carbon bond would be oxidized, increasing carbon-oxygen bond content and producing some OFG nano fragments. The carbon-fluorine bond isgradually catalysed to react according to its activity as the KMnO$_4$ dosage increases, while the unsaturated carbon bond is oxidized, leaving some isolated carbon-fluorine bonds with weak activity.
Volume 46, 2023
Continuous Article Publishing mode
Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020
Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020
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