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Ethylene oxide oligomer distribution in nonionic surfactants via high performance liquid chromatography (HPLC)
Author(s) -
Allen M. C.,
Linder D. E.
Publication year - 1981
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/bf02659666
Subject(s) - ethylene oxide , high performance liquid chromatography , chemistry , oligomer , adduct , chromatography , alkylphenol , elution , alcohol , fatty alcohol , pulmonary surfactant , organic chemistry , alkyl , copolymer , biochemistry , polymer
A high performance liquid chromatography (HPLC) method using adsorption columns combined with linear gradient elution has been developed for the determination of ethylene oxide (EO) distribution in nonionic surfactants. The quantitative ethoxylate adduct distribution in single‐carbon‐number and mixed‐carbon‐number primary alcohol‐based samples can be obtained. The HPLC method is also applicable for determining the molar EO distributions in diverse ethylene oxide adduct compounds such as alkylphenol ethoxylates, branched alcohol ethoxylates and secondary alcohol ethoxylates. Nonionic surfactant samples containing adducts up to 25 mol have been successfully separated and the individual adducts quantitated.