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Preparation and surface‐ active properties of polyoxyethylene‐glycol (600) monoesters of fatty acids
Author(s) -
Rao T. Chandrasekhara,
Sastry Y. Sita Rama,
Subbarao R.,
Lakshminarayana Gollamudi
Publication year - 1977
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/bf02671366
Subject(s) - stearic acid , chemistry , lauric acid , myristic acid , organic chemistry , degree of unsaturation , peg ratio , fatty acid , boric acid , oleic acid , double bond , surface tension , yield (engineering) , ethylene glycol , polymer chemistry , palmitic acid , materials science , biochemistry , physics , finance , quantum mechanics , economics , metallurgy
and Summary Polyoxyethyleneglycol (PEG‐600) monoesters of undecylenic, lauric, myristic, palmitic, stearic, oleic, ricinoleic and 12‐hydroxystearic acids were prepared in 80‐85% yield by reacting PEG with boric acid, esterifying the resultant borate with fatty acid, and selectively hydrolyzing the borate ester; their surface active properties were evaluated. Increase in acyl chain length increased the surface tension. The presence of a double bond or hydroxyl group in C 18 series improved the wetting and emulsifying proper‐ties. Unsaturation in the fatty acid chain reduced the foaming power.