Reactivity of nanothermite-based micro energetic sticks prepared by direct ink writing

Xu, Chuanhao; Zhao, Zhe; Qiao, Zhiqiang; Li, Xiaodong; Yang, Haifeng; Tang, De-Yun; Tang, Pengfei; Yang, Guangcheng

doi:10.1016/j.cej.2022.135608

Chemical Engineering Journal

2022

DOI: 10.1016/j.cej.2022.135608

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Reactivity of nanothermite-based micro energetic sticks prepared by direct ink writing

Chuanhao Xu

Zhe Zhao

Zhiqiang Qiao

et al.

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Cited by 13 publications

References 41 publications

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Constructing Porous Energetic Spherulites via Solvation‐Growth Coupling for Enhanced Combustion

Li,

Zhou,

Han

et al. 2024

Small

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The fabrication of materials with hierarchical structures has garnered great interest, owing to the potential for significantly enhancing their functions. Herein, a strategy of coupling molecular solvation and crystal growth is presented to fabricate porous spherulites of 2,4,6,8,10,12‐hexanitro‐2,4,6,8,10,12‐hexaazaisowurtzitane (CL‐20), an important energetic material. With the addition of polyvinylpyrrolidone in the antisolvent crystallization, the metastable solvate of CL‐20 is formed and grows spherulitically, and spontaneously desolvates to obtain the porous spherulite when filtration, in which the characteristic peak of the nitro group of CL‐20 shifts detected by the in situ micro‐confocal Raman spectroscopy. The effect of polyvinylpyrrolidone is thought to induce the solvation of CL‐20, confirmed by density functional theory calculations, meanwhile acting on the (020) face of CL‐20 to trigger spherulitic growth, demonstrated through infrared spectroscopy and Rietveld refinement of powder X‐ray diffraction. Moreover, compared to common CL‐20 crystals, porous spherulites exhibit enhanced combustion with increases of 6.24% in peak pressure, 40.21% in pressurization rate, and 9.63% in pressure duration effect, indicating the capability of hierarchical structures to boost the energy release of energetic crystals. This work demonstrates a new route via solvation‐growth coupling to construct hierarchical structures for organic crystals and provides insight into the structure‐property relations for material design.

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Constructing Porous Energetic Spherulites via Solvation‐Growth Coupling for Enhanced Combustion

Li,

Zhou,

Han

et al. 2024

Small

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Energetic materials in 3D: an in-depth exploration of additive manufacturing techniques

Zong,

Wang,

Ren

et al. 2024

Int J Adv Manuf Technol

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Reactivity regulation of B/KNO3/PVDF energetic sticks prepared by direct ink writing

Song²,

Xu³

et al. 2022

Chemical Engineering Journal

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Reactivity of nanothermite-based micro energetic sticks prepared by direct ink writing

Cited by 13 publications

References 41 publications

Constructing Porous Energetic Spherulites via Solvation‐Growth Coupling for Enhanced Combustion

Constructing Porous Energetic Spherulites via Solvation‐Growth Coupling for Enhanced Combustion

Energetic materials in 3D: an in-depth exploration of additive manufacturing techniques

Reactivity regulation of B/KNO3/PVDF energetic sticks prepared by direct ink writing

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