Abstract
In this article, we study the relation between viscosity and temperature of several biodiesel types (soybean, sunflower, corn, castor bean, and animal fat based) in a metrological point of view. All the biodiesel types were obtained by a transesterification reaction with methanol in the presence of an alkaline base as a catalyst. The biodiesels had their viscosities measured using capillary viscometers following Brazilian standards, in temperatures ranging from 20°C to 40°C. An extra study was performed with another beef tallow biodiesel (transesterified with ethanol) with temperatures up to 100°C. For all the measurements, the uncertainties were calculated. Even though there have been many studies on biodiesel on recent years, most of these do not have a metrological focus. This study shows the behavior of the biodiesel viscosity in a temperature range of 20°C to 40°C, and also how its composition influences the viscosity.
Issue Section:
Research Papers
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