Absolute knowledge of applying protic alkanolamine ionic liquids and the comprehension of diverse thermophysical properties of these materials is necessary in different processes. In this regard, the density, speed of sound, viscosity, and refractive index data for aqueous solutions of ionic liquids (ILs), 2-hydroxyethylammonium lactate [2-HEA]La, bis(2-hydroxyethyl)ammonium lactate [2-HDEA]La, and tris(2-hydroxyethyl)ammonium lactate [2-HTEA]La were measured in dilute concentration region of ILs at T = 288.15–318.125 K under 87.1 kPa pressure. The standard partial molar volume and partial molar isentropic compressibility (V_φ⁰ and Κ_φ⁰) were determined from the parameters of the Redlich–Mayer equation. Also, Pitzer interaction theory was used for the correlation of the experimental values. Temperature dependence of the standard partial molar volume was applied for determining the structure making or breaking behavior of the mentioned ionic liquids in water bulk by using apparent molar isobaric expansions E_φ⁰ and . The viscosity measurements were used to determine the viscosity B-coefficient. Finally, the solute–solvent interactions were explained with the obtained results. The results suggest that ionic liquid [2-HTEA]La has a stronger interaction with water compared to other ionic liquids.

中文翻译：

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质子离子液体单乙醇胺，二乙醇胺和乳酸三乙醇胺在水中的热物理性质

在不同的过程中，必须具备应用质子链烷醇胺离子液体的绝对知识以及对这些材料的多种热物理性质的理解。在这方面，离子液体（ILs），乳酸2-羟乙基铵[2-HEA] La，乳酸双（2-羟乙基）铵[2-HDEA]的水溶液的密度，声速，粘度和折射率数据在87.1 kPa压力下，在T = 288.15–318.125 K的ILs稀浓度区域中，测定了La和三（2-羟乙基）乳酸铵[2-HTEA] La 。标准偏摩尔体积和偏摩尔熵压缩（V _φ ⁰和Κ _φ ⁰）由Redlich-Mayer方程的参数确定。此外，皮兹相互作用理论被用于实验值的相关性。标准偏摩尔体积的温度依赖性涂敷了用于确定所述结构制造，或通过使用表观摩尔等压膨胀打破水散装所提到的离子液体的行为Ë _φ ⁰和。粘度测量用于确定粘度B系数。最后，用所获得的结果解释了溶质与溶剂之间的相互作用。结果表明，与其他离子液体相比，离子液体[2-HTEA] La与水的相互作用更强。