Ionic liquid (IL) usually possesses high viscosity. In this work, the selected organic solvents, namely, dimethyl sulfoxide, N,N-dimethylacetamide, and N,N-dimethylformamide, were used as the diluents to lower IL viscosity. The thermophysical properties of the densities and viscosities for the binary mixtures of IL (i.e., 1-octyl-3-methylimidazolium acetate) with solvents were studied at normal pressure in the temperature ranges of 303.15 K to 348.15 K. The effects of the organic solvents on lowering IL viscosity were quantitatively evaluated. The excess properties of the mixtures were calculated to analyze the interactions between IL and solvents. The hard-sphere model was employed to reproduce the viscosity behavior of the pure substances and binary mixtures.

中文翻译：

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有机溶剂对乙酸1-辛基-3-甲基咪唑鎓的热物理性质

离子液体（IL）通常具有高粘度。在这项工作中，所选的有机溶剂，即二甲亚砜，N，N-二甲基乙酰胺和N，N-二甲基甲酰胺，被用作稀释剂以降低IL粘度。在常压下，在303.15 K至348.15 K的温度范围内研究了IL（即乙酸1-辛基-3-甲基咪唑鎓）与溶剂的二元混合物的密度和粘度的热物理性质。有机溶剂的影响在降低IL粘度方面进行了定量评估。计算混合物的过量性质以分析IL与溶剂​​之间的相互作用。硬球模型用于再现纯物质和二元混合物的粘度行为。