TY - GEN
T1 - Use of Pressurized Differential Scanning Calorimetry (PDSC) to evaluate effectiveness of additives in vegetable oil lubricants
AU - Cheenkachorn, Kraipat
AU - Lloyd, Wallis A.
AU - Perez, Joseph M.
PY - 2003
Y1 - 2003
N2 - Use of renewable resources to replace petroleum base stocks in lubricants is attractive. Research on additives enhanced by current advances in genetic and chemical modifications has resulted in improved oxidative stability of vegetable oils. Like most oxidation processes, the oxidative degradation of vegetable oils is complex. The auto-oxidation free radical mechanisms and hydroperoxide theories of oxidation have been well studied. Factors that influence the degradation of oils include temperature, surface reactivity, rates of formation of radicals, chemical composition factors such as olefin and aromatic content and additive effectiveness. This uses pressurized differential scanning calorimetry to evaluate the oxidative stability of four biodegradable fluids with and without additives. The oleic acid content of the four fluids ranged from 83 to 23 percent. Reaction kinetics are used to explain observed differences in phase transformation and polymerization reactions. Additive selection to obtain maximum effectiveness in the base stocks is reported.
AB - Use of renewable resources to replace petroleum base stocks in lubricants is attractive. Research on additives enhanced by current advances in genetic and chemical modifications has resulted in improved oxidative stability of vegetable oils. Like most oxidation processes, the oxidative degradation of vegetable oils is complex. The auto-oxidation free radical mechanisms and hydroperoxide theories of oxidation have been well studied. Factors that influence the degradation of oils include temperature, surface reactivity, rates of formation of radicals, chemical composition factors such as olefin and aromatic content and additive effectiveness. This uses pressurized differential scanning calorimetry to evaluate the oxidative stability of four biodegradable fluids with and without additives. The oleic acid content of the four fluids ranged from 83 to 23 percent. Reaction kinetics are used to explain observed differences in phase transformation and polymerization reactions. Additive selection to obtain maximum effectiveness in the base stocks is reported.
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U2 - 10.1115/ICES2003-0657
DO - 10.1115/ICES2003-0657
M3 - Conference contribution
AN - SCOPUS:78049456507
SN - 0791836789
SN - 9780791836781
T3 - Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division
SP - 197
EP - 206
BT - ASME 2003 Internal Combustion Engine Division Spring Technical Conference, ICES2003
T2 - ASME 2003 Internal Combustion Engine Division Spring Technical Conference, ICES2003
Y2 - 11 May 2003 through 14 May 2003
ER -