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Polarity of broad and narrow distributed ethoxylates of fatty alcohols
Author(s) -
Voelkel A.,
Szymanowski J.,
Hreczuch W.
Publication year - 1993
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/bf02641008
Subject(s) - polarity (international relations) , alcohol , chemistry , fatty alcohol , chromatography , analytical chemistry (journal) , organic chemistry , biochemistry , cell
The polarity of broad‐ and narrow‐range alcohol ethoxylates was studied by inverse gas chromatography. The narrow‐range alcohol ethoxylates (NRD) exhibit higher polarity at 70°C than the broadly distributed products (BRD). The difference in polarity between BRD and NRD products decreases, however, with increasing temperature and diminishes at 110°C, which can be predicted from structural increments. The rise of the average number of oxyethylene units increases polarity of the examined products. The changes of ethoxylate polarity are well described by examined parameters with the exception of ΔG m s (CH 2 ).