Rheological Behavior of Corn oil at Different Viscosity and Shear rates

Abstract

In this article I presented the rheological behavior of corn oil studied in the temperature range 40-100°C and shear rates between 3.3 and 1312.0 s-1. The experiments showed the decrease of dynamic viscosity with temperature and shear rate. To study the dependence of dynamic viscosity on temperature, we applied two equations that perfectly describe the rheological behavior of corn oil. These equations are the Andrade equation and the Azian equation for which the correlation coefficients have values close to unity.

Effect of Temperature on Rheology of Corn (Zea mays) oil

“…Another limiting characteristic for Corn oil is its chemical reactivity with the materials it comes into contact with, especially plastics (including elastomers), steels, and copper and aluminum alloys. The first generations of oils obtained from rapeseeds were not performing well due to instability during oxidation, with the formation of muddy deposits at high temperatures, gelation and loss of fluidity at low temperature [13][14][15] .…”

“…Vegetable oils with rheological properties have the great disadvantage that at high temperatures they decompose, forming fatty acids that attack the friction surfaces. In the presence of air, they are sicative (dry), resulting in a thin and resistant film, which is difficult to remove fom surfaces [15][16][17][18][19] .…”