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Synthesis and Physical Properties of Potential Biolubricants based on Ricinoleic Acid
Author(s) -
Yao Linxing,
Hammond Earl G.,
Wang Tong,
Bhuyan Satyam,
Sundararajan Sriram
Publication year - 2010
Publication title -
journal of the american oil chemists' society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.512
H-Index - 117
eISSN - 1558-9331
pISSN - 0003-021X
DOI - 10.1007/s11746-010-1574-1
Subject(s) - ricinoleic acid , lubricity , environmentally friendly , organic chemistry , chemistry , materials science , biochemical engineering , castor oil , biology , ecology , engineering
The desire to replace petroleum‐based materials with environmentally friendly and sustainable alternatives has stimulated the development of vegetable oil‐based materials as biolubricants. Our studies have focused on molecules that might be produced by biosynthesis of genetically altered oilseed plants with limited post‐harvest modification. Various ricinoleate and 12‐hydroxystearate esters and estolides were synthesized and their melting points and viscosities were documented. The antifriction and antiwear properties of some esters were evaluated with a microtribometer. The purities of all the products were >98–99% by gas chromatography. Some of these compounds showed melting points, viscosities, and lubricity suitable for uses as biolubricants. Various ricinoleate esters acylated at the 12 positions with short‐chain acids were particularly promising.