Isothermal Thermogravimetric Analysis of Soybean Oil Oxidation Correlated to Thin Film Micro-Oxidation Test Methods

An isothermal thermogravimetric analysis (TGA) method was used to generate a model capable of predicting the results of the Thin Film Micro-Oxidation (TFMO) test in a soybean oil system. Utilizing a series of pseudorate constants and “activation energies”, weight loss data from the TGA method can pr...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2012-03, Vol.51 (9), p.3550-3555
Main Authors: Arca, Mert, Sharma, Brajendra K, Perez, Joseph M, Doll, Kenneth M
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Constants
Exact sciences and technology
Lubricants
Mathematical models
Oxidation
Polymerization
Reactors
Soya bean oil
Thermogravimetric analysis
Thin films
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Summary:An isothermal thermogravimetric analysis (TGA) method was used to generate a model capable of predicting the results of the Thin Film Micro-Oxidation (TFMO) test in a soybean oil system. Utilizing a series of pseudorate constants and “activation energies”, weight loss data from the TGA method can predict oxidation, polymerization, evaporation, and the formation of high molecular weight deposits, normally observed in the TFMO test. These parameters can be used in simple computer simulations which can calculate the weight of each component of a lubricant as it decomposes. This allows evaluation of lubricants without the difficult to obtain TFMO equipment, instead utilizing equipment available in most laboratories.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie201696w