Use of Pressurized Differential Scanning Calorimetry (PDSC) to Evaluate Effectiveness of Additives in Vegetable Oil Lubricants

Kraipat Cheenkachorn, Joseph M. Perez, Wallis A. Lloyd

Research output: Contribution to journalConference article

1 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)197-206
Number of pages10
JournalAmerican Society of Mechanical Engineers, Internal Combustion Engine Division (Publication) ICE
StatePublished - Dec 1 2003
EventProceedings of the 2003 Spring Technical Conference of the ASME Internal Combustion Engine Division - Salzburg, Austria
Duration: May 11 2003May 14 2003


All Science Journal Classification (ASJC) codes

  • Engineering(all)

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