Chemical, Physical and Tribological Investigation of Polymercaptanized Soybean Oil

Polymercaptanized soybean oil (PMSO) was investigated for its chemical, physical and tribological properties relative to soybean oil (SO) and also as a potential multi-functional lubricant additive in high oleic sunflower oil (HOSuO). Analytical investigations showed that PMSO is obtained by convers...

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Veröffentlicht in:	Tribology letters 2017-09, Vol.65 (3), p.1-16, Article 87
Hauptverfasser:	Biresaw, Girma, Lansing, James C., Bantchev, Grigor B., Murray, Rex E., Harry-O’Kuru, Rogers E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Chemistry and Materials Science Cold flow Corrosion and Coatings Flow stability Lubricants Materials Science Mechanical properties Nanotechnology Oligomers Organic chemistry Original Paper Oxidation Physical Chemistry Solubility Soybean oil Soybeans Sunflower oil Sunflowers Surfaces and Interfaces Theoretical and Applied Mechanics Thin Films Tribology Vegetable oils Viscosity Wear
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Zusammenfassung:	Polymercaptanized soybean oil (PMSO) was investigated for its chemical, physical and tribological properties relative to soybean oil (SO) and also as a potential multi-functional lubricant additive in high oleic sunflower oil (HOSuO). Analytical investigations showed that PMSO is obtained by conversion of 76% of double bonds in SO into thiol (–SH) and sulfide (R–S–R′) groups. PMSO product mixture comprised 70% monomer and 30% oligomers, versus 99.6 and 0.4%, respectively, for SO. Relative to SO, PMSO displayed higher density, viscosity and oxidation stability; similar cold flow properties; and lower viscosity index. PMSO displayed good solubility in HOSuO (>10% w/w), but poor solubility in polyalpha olefin-6 (
ISSN:	1023-8883 1573-2711
DOI:	10.1007/s11249-017-0866-0