Modifying the Wettability of Nitramine Explosives using Anionic, Cationic and Nonionic Surfactants

Doukkali, Mouhcine; Gauthier, E.; Patel, R.N.; Степанов, В. П.; Hadim, Hamid

doi:10.1002/prep.201700097

Cited by 7 publications

(3 citation statements)

References 25 publications

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“…Therefore, it is crucial to strengthen the interfacial interaction between CL-20 and the binder for a wide application of CL-20. However, previous studies have shown that CL-20 is more difficult to wet than HMX [9,10,11], in other words, dewetting is a more serious problem in CL-20-containing high energetic composites.…”

Section: Introductionmentioning

confidence: 99%

Study of the Interfacial Interaction Performance of Branched Bonding Agents and CL-20

Zhao¹,

Wang²,

Li³

et al. 2019

Materials

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Adding bonding agents to the formulation is an effective way to solve the dewetting of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) in the binder matrix. For the design and selection of the structure of a bonding agent suitable for CL-20, a series of branched polyether bonding agents with terminal groups substituted by cyano, ester and hydroxyl functional groups were employed. Contact angle, Fourier transform infrared spectra (FTIR) and X-ray photoelectron spectroscopy (XPS) measurements were performed, and the results were compared with that of common bonding agent, the boron trifluoride triethanolamine complex (TEA·BF3). The results revealed that the nitramine reinforcement of the three polar groups to CL-20 was in the order cyano group > hydroxyl group > ester group. It is proposed that CBPE-10,10 (cyano-terminated branched polyether bonding agent) had the strongest interfacial interaction with CL-20. The adhesion work value was 105.37 mN⋅m−1 and the adhesion degree was 41.04%. The bonding properties of CBPEs/CL-20 were better than those of TEA·BF3/CL-20.

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Section: Introductionmentioning

confidence: 99%

Study of the Interfacial Interaction Performance of Branched Bonding Agents and CL-20

Zhao¹,

Wang²,

Li³

et al. 2019

Materials

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“…The morphology and structure of the fiber can be effectively controlled by changing the parameters to achieve the purpose of optimizing the fiber material [26][27][28]. Previous studies have proved that the directional transportation of liquids can be achieved by rationally designing the difference in the surface microstructure of the material [29,30] or changing the chemical composition of the surface of the material [31]. For example, a group [32] prepared Janus membranes with different wettability on both sides, which can realize one-way oil delivery through electrospinning polyvinylidene fluoride (PVDF-HFP) and PVDP-HFP containing well-dispersed fluorinated decyl polyhedral oligomeric silsesquioxanes (FD-POSS) as well as fluorinated alkyl silane (FAS).…”

Section: Introductionmentioning

confidence: 99%

A Janus Mesh with Robust Interface and Controllable Wettability for Water Transport

Guo

Gao

et al. 2022

Journal of Nanomaterials

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The rational design of material structure is of great importance to the membrane material in water manipulation and management. Among them, by designing materials and structures on both sides of Janus membranes with porous structures, membranes with opposite wettability can be prepared to show directional liquid transport effects. However, the Janus membrane has the weakness of interfacial bonding due to the difference in the material and structure of the two layers. Here, we report a method to improve the interfacial bonding force of the two layers. Janus membrane is prepared using polyvinylidene fluoride hexafluoropropylene (PVDF-HFP) and cellulose acetate (CA) through the electrospinning method and then treated with sodium hydroxide (NaOH) solution. The as-prepared Janus membrane has a hydrophilic-hydrophobicity gradient and a strong bonding interface obtained by adjusting the chemical composition and microstructure. The NaOH solution plays a dominant role in forming hydrophilic-hydrophobicity gradient and enhancing the interface bonding between the bilayer membranes. The results show that this Janus membrane can achieve the purpose of oil-water separation and one-way water transmission by absorbing oil and regulating liquid surface tension. This strategy provides new ideas and technical supports for improving the Janus membrane interfacial bonding force and expands potential applications in the future.

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“…Consequently, the progress of original desensitized high explosives can be obtained via innovating the coating material . In addition, the surface coating method also imparts significant characteristics in many aspects, for instance, it enhances the mechanical performances, settles the moisture absorption issue of propellants, and contributes to the process of explosive molding. , Hence, the correct selection of promising desensitization coating materials (DMs), which improve the interfacial contact of EMs and DMs and, simultaneously, preserve the comprehensive properties of modifiable explosive crystals used in actual applications is a big challenge as well.…”

Section: Introductionmentioning

confidence: 99%

Biomimetic-Inspired One-Step Strategy for Improvement of Interfacial Interactions in Cellulose Nanofibers by Modification of the Surface of Nitramine Explosives

et al. 2021

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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.

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Modifying the Wettability of Nitramine Explosives using Anionic, Cationic and Nonionic Surfactants

Cited by 7 publications

References 25 publications

Study of the Interfacial Interaction Performance of Branched Bonding Agents and CL-20

Study of the Interfacial Interaction Performance of Branched Bonding Agents and CL-20

A Janus Mesh with Robust Interface and Controllable Wettability for Water Transport

Biomimetic-Inspired One-Step Strategy for Improvement of Interfacial Interactions in Cellulose Nanofibers by Modification of the Surface of Nitramine Explosives

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