A Study on Density and Viscosity for Aqueous Solutions

• Main Authors: Shou-Ming Hwang, 黃守民
• Other Authors: Ming-Jer Lee
• Format: Others
• Language: zh-TW
• Published: 1993
• Online Access: http://ndltd.ncl.edu.tw/handle/89386999316985917452

碩士 === 國立臺灣科技大學 === 化學工程研究所 === 81 === A falling ball viscometer and pycnometers have been employed to measure the liquid viscosity and density, respectively. Four binary and two ternary systems composed of water, butylamine, benzylamine, and ethanol were investigated at atmospheric pressure and at 303.15K , 313.15K , 323.15 K. According to the experiment data, the molecular interations involving in each system were discussed and the exccess volumes , viscosites as well as Gibbs free energies were fitted by a variety of empirical models. The mixing rules of the three-reference-fluid corresponding- state viscosity model have been improved for aqueous solutions . It is found that the model with an augmented asymmetric mixing rule predicts satisfactorily the viscosity of ternary aqueous solutinns using determined binary interaction constants . Moreover, an attempt of correlating solution''s thermophysical data by means of neural networks has been made. It apperas that the neural networks trained by characteristic imformation of binary systems can successfully estimate the viscosity and density for the ternary aqueous solutions.