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The solution properties of some polyoxyethylene‐polyoxypropylene surfactants in nonaqueous solvents
Author(s) -
Cowie J. M. G.,
Sirianni A. F.
Publication year - 1966
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/bf02641190
Subject(s) - chemistry , vapor pressure , light scattering , micelle , dynamic light scattering , polyol , micellar solutions , benzene , chromatography , analytical chemistry (journal) , organic chemistry , scattering , materials science , aqueous solution , polyurethane , optics , nanotechnology , physics , nanoparticle
Results obtained with Pluronic polyol homologues in benzene and in dioxane by light‐scattering, ultracentrifugal and vapor pressure lowering measurements in addition to data obtained in water and in butyl chloride by light‐scattering and ultracentrifugal determinations are described. The systems are examined over a wide range of solute concentrations at about 37C. Considerable difference appears to exist between weight and number‐average micellar weight obtained by light‐scattering and two methods of measuring vapor pressure lowering of the solutions. Divergence in micellar weight values appears to be less pronounced between the latter technique and ultracentrifugal determinations. Possible micellar configurations of these Pluronic polyols are presented.