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Biomimetic-Inspired One-Step Strategy for Improvement of Interfacial Interactions in Cellulose Nanofibers by Modification of the Surface of Nitramine Explosives
Langmuir ( IF 3.7 ) Pub Date : 2021-07-08 , DOI: 10.1021/acs.langmuir.1c00874 Ling Chen 1 , Xinfu Cao 2 , Yong Chen 3 , Qiang Li 1 , Yingbo Wang 1 , Xijin Wang 1 , Yang Qin 4 , Xiang Cao 1 , Jie Liu 4 , Ziqiang Shao 5 , Weidong He 1
Langmuir ( IF 3.7 ) Pub Date : 2021-07-08 , DOI: 10.1021/acs.langmuir.1c00874 Ling Chen 1 , Xinfu Cao 2 , Yong Chen 3 , Qiang Li 1 , Yingbo Wang 1 , Xijin Wang 1 , Yang Qin 4 , Xiang Cao 1 , Jie Liu 4 , Ziqiang Shao 5 , Weidong He 1
Affiliation
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Recently, a burgeoning category of biocompatible botanically derived nanomaterial cellulose nanofibers (CNFs) has captured tremendous attention on account of its entangled nanostructured network, natural abundance, and outstanding mechanical properties. Biomimetically inspired by the superior properties of CNFs, this paper examined them as the coating material to cover cyclotrimethylenetrinitramine (RDX), cyclotetramethylenetetranitramine (HMX), and hexanitrohexaazaisowurtzitane (CL-20) via a facile water suspension method and the ultrasonic technology. The core–shell structure and the composition of energetic crystal@CNF were examined through scanning electron microscopy, X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, and X-ray photoelectron spectroscopy analyses. The obtained outcomes demonstrated that the dispersibility of the CNF enhanced favorably upon covering the surface of explosive crystals; the interfacial contact ability between CNFs and energetic crystals was also manifested to be increased, which could be ascribed to the interfacial interaction of hydrogen bonds and the electrostatic force of self-assembly. In addition, the stable crystalloid construction of β-HMX and ε-CL-20 has been preserved positively in the preparation process. In comparison with raw explosives, the thermal stability and sensitivity performances of the core–shell structure composites were outstanding. Accordingly, this work demonstrated the rewarding application of coating CNFs uniformly on the surface of energetic crystals, ulteriorly offering a potential fabrication strategy for the embellishment of high-explosive crystals.
中文翻译：
通过对硝胺炸药表面进行改性来改善纤维素纳米纤维界面相互作用的仿生一步策略
最近，一种新兴的生物相容性植物衍生纳米材料纤维素纳米纤维 (CNF) 因其缠结的纳米结构网络、天然丰度和出色的机械性能而引起了极大的关注。受 CNF 优异性能的仿生启发，本文通过简便的水悬浮法和超声波技术将它们作为包覆环三亚甲基三硝胺 (RDX)、环四亚甲基四硝胺 (HMX) 和六硝基六氮杂异武兹烷 (CL-20) 的涂层材料进行了研究。通过扫描电子显微镜、X 射线衍射、傅里叶变换红外光谱、拉曼光谱和 X 射线光电子能谱分析检查了核壳结构和高能晶体@CNF 的组成。所得结果表明，CNF的分散性在覆盖爆炸晶体表面后有利于提高；CNFs与高能晶体之间的界面接触能力也表现出增加，这可能归因于氢键的界面相互作用和自组装的静电力。此外，β-HMX 和 ε-CL-20 的稳定晶体结构在制备过程中得到了积极的保护。与生炸药相比，核壳结构复合材料的热稳定性和敏感性性能优异。因此，这项工作证明了在高能晶体表面均匀涂覆 CNF 的有益应用，
更新日期：2021-07-20
中文翻译：
通过对硝胺炸药表面进行改性来改善纤维素纳米纤维界面相互作用的仿生一步策略
最近，一种新兴的生物相容性植物衍生纳米材料纤维素纳米纤维 (CNF) 因其缠结的纳米结构网络、天然丰度和出色的机械性能而引起了极大的关注。受 CNF 优异性能的仿生启发，本文通过简便的水悬浮法和超声波技术将它们作为包覆环三亚甲基三硝胺 (RDX)、环四亚甲基四硝胺 (HMX) 和六硝基六氮杂异武兹烷 (CL-20) 的涂层材料进行了研究。通过扫描电子显微镜、X 射线衍射、傅里叶变换红外光谱、拉曼光谱和 X 射线光电子能谱分析检查了核壳结构和高能晶体@CNF 的组成。所得结果表明，CNF的分散性在覆盖爆炸晶体表面后有利于提高；CNFs与高能晶体之间的界面接触能力也表现出增加，这可能归因于氢键的界面相互作用和自组装的静电力。此外，β-HMX 和 ε-CL-20 的稳定晶体结构在制备过程中得到了积极的保护。与生炸药相比，核壳结构复合材料的热稳定性和敏感性性能优异。因此，这项工作证明了在高能晶体表面均匀涂覆 CNF 的有益应用，
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