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The determination of polymers in fats and oils
Author(s) -
Firestone David
Publication year - 1963
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/bf02632670
Subject(s) - monomer , iodine value , polymer , fractionation , polymerization , chemistry , distillation , iodine , acetone , organic chemistry , urea , viscometer , refractive index , viscosity , polymer chemistry , chromatography , materials science , optoelectronics , composite material
Abstract Fats and fatty acids are polymerized by oxidative or thermal processes. Structures have been deduced by using a number of chemical and physical techniques. General methods applicable to the analysis of polymerized oils include determinations of acetone number, iodine value (I.V.), molecular weight, dielectric constant, viscosity, and refractive index. Monomers, dimers, and trimers are separated generally by molecular distillation. In addition, urea fractionation and a number of chromatographic techniques are useful for the detection of monomers, dimers, and polymers.