Document Type
Thesis
Date of Award
6-30-1967
Degree Name
Master of Science in Chemical Engineering - (M.S.)
Department
Chemical Engineering
First Advisor
Saul I. Kreps
Second Advisor
John E. McCormick
Abstract
Five normal alcohols were prepared to greater than 99% purity. Simultaneous viscosity and density measurements were made beginning at 20°C above the reported normal freezing point and ending at incipient crystallization.
It was assumed that viscosity could be expressed as a function of specific volume and absolute volume, and that a simple logarithmic function would give a suitable correlation. The resulting equation yielded viscosities with an average error of less than 0.8% for the entire collection of data.
Deviations from a previously established linear function were observed in the density data from about 5°C above the reported normal freezing point to the temperature at crystallization. These deviations all occurred in the direction of a greater density than that which would have been predicted had the original linear function been followed. This effect may be the result of the formation of a quasi-crystalline lattice structure. Similar deviations were observed upon examination of the viscosity data. From this, inferences are made as to the relationship between viscosity and density.
An attempt to correlate density with temperature and carbon number, on a totally empirical basis using a quadratic function, was not successful. However, the addition of a correction factor to the equation, which was found to be a simple function of carbon number, reduced the error substantially.
Recommended Citation
Pulver, Martin Irwin, "An investigation of some properties of liquids near their freezing points" (1967). Theses. 2846.
https://digitalcommons.njit.edu/theses/2846
