Industry/University Cooperative Research Project: Liquid Mixture Transport Properties and Onsager Coefficients

该项目允许在整个组成范围内以及在环境压力下0℃至90℃之间的液体范围内测量十种非理想二元液体混合物的相互扩散系数、导热系数和剪切粘度。结合对这些相同混合物的输运热进行的测量，这些测量为开发和测试液体混合物输运模型提供了一组一致的数据，作为成分和温度的函数。特别地，利用并测试了相应的状态技术和局部组合模型。此外，从测量的过量焓的温度依赖性（已经可用）的热力学信息用于确定热力学非理想性，并从测量的输运性质反算Onsager系数。这提供了一套完整的Onsager热质量系数及其组成和温度依赖性。研究了它们与热力学性质之间的关系及其解释。

This project allows for the measurement of mutal diffusion coefficients, thermal conductivities, and shear viscosities for ten nonideal, binary liquid mixtures over the entire composition range and over the liquid range between Oo and 90oC at ambient pressure. In conjunction with the measurements being made on the heats of transport for these same mixtures, the measurements provide a consistent set of data as a function of both composition and temperature for development and testing of liquid-mixtures transport models. In particular, corresponding states techniques and local composition models are utilized and tested. Additionally, thermodynamic information from the temperature dependence of measured excess enthalpies (already available) are used to determine thermodynamic nonidealities and to back-calculate Onsager coefficients from the measured transport properties. This provides a complete set of Onsager heat-mass coefficients and their composition and temperature dependence. Correlation and interpretation of relationships between them and thermodynamic properties are investigated.