This work is intended to investigate the molecular interactions and transport properties of five pseudo-binary mixtures of various combinations of vegetable oils (sesame oil and sunflower oil) and organic extractants (Aliquat 336, TBP, D2EHPA and TOA) by determining their surface tension, density and viscosity over a temperature range of 25–60°C at atmospheric pressure. The experimental data are fitted into various literature models. Information on excess molar volume and viscosity deviation leads to an understanding of solute–solvent interactions. Further, the ultrasonic velocity, isentropic compressibility, intermolecular free length, specific impedance, apparent molar volume, volumetric thermal expansion coefficient, excess Gibbs' free energy, change in enthalpy of mixing and entropy of activation of the liquids have been calculated. A model relating the surface tension, density and viscosity of the pseudo-binary mixtures has been proposed in this paper. Analysis of Fourier transform infrared (FTIR) studies has further illustrated the intermolecular interactions in the pseudo-binary mixtures.

中文翻译：

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25–60°C 常压下有机萃取剂和植物油的伪二元混合物的光谱、热力学和超声性质

这项工作旨在通过测定植物油（芝麻油和葵花籽油）和有机萃取剂（Aliquat 336、TBP、D2EHPA 和 TOA）的各种组合的表面张力来研究它们的五种伪二元混合物的分子相互作用和传输特性，在大气压下 25–60°C 的温度范围内的密度和粘度。将实验数据拟合到各种文献模型中。有关过量摩尔体积和粘度偏差的信息有助于了解溶质 - 溶剂相互作用。此外，还计算了超声速度、等熵压缩率、分子间自由长度、比阻抗、表观摩尔体积、体积热膨胀系数、过量吉布斯自由能、混合焓的变化和液体的活化熵。本文提出了一种与伪二元混合物的表面张力、密度和粘度相关的模型。傅里叶变换红外 (FTIR) 研究的分析进一步说明了伪二元混合物中的分子间相互作用。