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首页> 外文期刊>Surface and Interface Analysis: SIA: An International Journal Devoted to the Development and Application of Techniques for the Analysis of Surfaces, Interfaces and Thin Films >Effect of water on the interfacial structures of room-temperature ionic liquids
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Effect of water on the interfacial structures of room-temperature ionic liquids

机译：水对室温离子液体界面结构的影响

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摘要

The interfacial structures of cyano-based room-temperature ionic liquids play a very important role in reducing friction. However, the presence of water impairs their tribological performance. The interfacial structures and friction forces of 1-ethyl-3-methylimidazolium dicyanamide, [EMIM][DCN], and the effect of water on these structures and forces were investigated using atomic force microscopy. In addition, the interaction of water and [EMIM][DCN] was evaluated using Fourier-transform infrared (FT-IR) spectroscopy. Multiple repulsive layers were observed in the [EMIM][DCN] solution. This solution showed low friction force because these repulsive layers worked as protective layers against friction. On the other hand, the specific repulsive layer characteristics of [EMIM][DCN] could not be observed in a [EMIM][DCN] + 2 wt% H2O solution. FT-IR results indicated that the layer structure of [EMIM][DCN] was disturbed by the addition of H2O. Therefore, the solution containing water exhibited a high friction force.
机译：基于氰基室温离子液体的界面结构在减少摩擦方面起着非常重要的作用。然而，水的存在损害了他们的摩擦学性能。使用原子力显微镜研究了1-乙基-3-甲基咪唑鎓二氰酰胺，ε，摩沙胺，[emim] [dcn]和水对这些结构和力的影响。另外，使用傅里叶变换红外（FT-IR）光谱评估水和[emim]Δ[emim] [dcn]的相互作用。在[emim]溶液中观察到多个排斥层。该解决方案显示出低摩擦力，因为这些排斥层作为防止摩擦的保护层。另一方面，在[emim] + 2wt％H 2 O溶液中，不能观察到[emim] [dcn]的特定排斥层特征。 FT-IR结果表明，通过加入H 2 O，[emim] [dcn]的层结构受到干扰。因此，含水的溶液表现出高摩擦力。

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