Abstract In this paper, a ether-group functionalized ionic liquid 1-(2-methoxyethyl)-3-ethylimidazolium thiocyanate [C22O1IM][SCN] was synthesized and characterized by 1H-NMR, 13C-NMR, ESI mass spectrometry and elemental analysis, and the viscosities of [C22O1IM][SCN] and of binary mixtures with monohydric alcohols (ethanol, 1-propanol, isopropanol and 1-butanol) were measured over the entire range of mole fraction in the temperature range from 288.15 K to 318.15 K and atmospheric pressure. The Arrhenius equation was used to describe the changing trends of viscosity with temperature. To investigate the internal interactions of the mixtures, the viscosity deviations, Δη, and the Gibbs energy of activation for viscous flow of the relative viscosity for the mixture, ΔG≠r, were calculated based on the experimental viscosity, they were all negative values indicating that the hydrogen bond formation between ionic liquid and alcohol. In addition, the related entropies and enthalpies were also calculated and discussed.

中文翻译：

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1-(2-甲氧基乙基)-3-乙基咪唑鎓硫氰酸盐离子液体与短链醇二元混合物的粘度

摘要 本文合成了一种醚基官能化离子液体1-(2-甲氧基乙基)-3-乙基咪唑硫氰酸盐[C22O1IM][SCN]，并通过1H-NMR、13C-NMR、ESI质谱和元素分析进行​​表征， [C22O1IM][SCN] 和二元混合物与一元醇（乙醇、1-丙醇、异丙醇和 1-丁醇）的粘度在 288.15 K 至 318.15 K 的温度范围内在整个摩尔分数范围内进行测量，并且气压。Arrhenius 方程用于描述粘度随温度的变化趋势。为了研究混合物的内部相互作用，基于实验粘度计算了混合物的粘度偏差 Δn 和粘性流动的吉布斯活化能 ΔG≠r，均为负值，表明离子液体与醇之间形成氢键。此外，还计算和讨论了相关的熵和焓。