Understanding thermodynamic properties in mixtures, particularly those of interest to industries, such as solvents and surfactants, is crucial for comprehending the intermolecular forces that govern these systems. Accurate data on the volumetric and transport properties of solvent–surfactant mixtures are valuable from an academic and industrial perspective. In this paper, we present an experimental study that resulted in 188 data points of density and viscosity for binary mixtures of methanol and IGEPAL (CO-720, CA-720, and CO-630) measured at atmospheric pressure within a temperature range of T = (293.15, 303.12, 313.15, and 323.15) K. Furthermore, based on these experimental findings, we calculated the following derivative properties: excess molar volume, viscosity deviation, and isobaric thermal expansion coefficient. All binary mixtures studied here exhibited regular liquid behavior with attractive intermolecular forces because of the high association between alcohol and surfactant components.

中文翻译：

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大气压下温度对甲醇 (1) + IGEPAL (2)（CO-720、CA-720 和 CO-630）密度和粘度的影响

了解混合物的热力学性质，特别是工业感兴趣的热力学性质，例如溶剂和表面活性剂，对于理解控制这些系统的分子间力至关重要。从学术和工业角度来看，溶剂-表面活性剂混合物的体积和传输特性的准确数据非常有价值。在本文中，我们提出了一项实验研究，该研究得出了甲醇和 IGEPAL（CO-720、CA-720 和 CO-630）二元混合物的 188 个密度和粘度数据点，这些数据点是在大气压下在T温度范围内测量的。 = (293.15、303.12、313.15 和 323.15) K。此外，根据这些实验结果，我们计算了以下导数性质：过量摩尔体积、粘度偏差和等压热膨胀系数。由于醇和表面活性剂成分之间的高度缔合，这里研究的所有二元混合物都表现出规则的液体行为以及具有吸引力的分子间力。