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Quantitation of estolides by Fourier transform infrared spectroscopy
Author(s) -
Erhan Selim M.,
Kleiman Robert,
Abbott Thomas P.
Publication year - 1996
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/bf02518108
Subject(s) - chemistry , absorbance , infrared spectroscopy , fourier transform infrared spectroscopy , chromatography , infrared , spectroscopy , organic chemistry , chemical engineering , physics , optics , quantum mechanics , engineering
Estolides were produced from meadowfoam oil fatty acids, oleic, linoleic, petroselinic, and cis ‐5, cis ‐13 docosadienoic acids. Estolide reaction mixtures were quantitated by Fourier transform infrared spectroscopy and compared to the area percentages determined by high‐performance liquid chromatography. The absorbance frequency of estolide carbonyl (1737 cm −1 ) is different than the lactone carbonyl (1790 cm −1 ) and the acid carbonyl (1712 cm −1 ). Estolide standards were obtained by wiped‐film molecular‐still distillations and column chromatography.