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

该项目允许测量10种非理想的二元液体混合物在整个组成范围内的互扩散系数、导热系数和剪切粘度，以及在常压下从Oo到90oC的液体范围。结合对这些相同混合物的输送热的测量，这些测量提供了一组作为组成和温度的函数的一致数据，用于开发和测试液体-混合物输送模型。特别是，利用和测试了相应的状态技术和局部合成模型。此外，来自测量的超额热焓的温度依赖关系的热力学信息(已有)被用来确定热力学非理想性，并根据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关系。对它们与热力学性质之间的关系进行了关联和解释。

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.