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Micellar structure of alkaline earth metal alkylarylsulphonate detergents
Author(s) -
Tricaud C.,
Hipeaux J. C.,
Lemerle J.
Publication year - 1989
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010010302
Subject(s) - chemistry , alkaline earth metal , micelle , magnesium , lubricant , inorganic chemistry , metal , solvent , micellar solutions , organic chemistry , aqueous solution
Overbased and neutral magnesium and calcium salts of sulphonic acids were prepared, these salts having a very complex micellar structure when added to a lubricant oil. Using solutions in isooctane, the authors studied this structure by ultracentrifugation. The following results were obtained: a correlation between the alkaline reserve of additives and the size of the micelle; a difference in the size of the micelle in relation to the earth metal used; and the influence of the solvent used in the evolution of the micellar structure in the solution.