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Alanine‐based surfactants: Synthesis and some surface properties
Author(s) -
Mohamed A. S.,
Mohamed M. Z.,
Ismail D. A.
Publication year - 2004
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-004-0326-6
Subject(s) - chemistry , surface tension , critical micelle concentration , adsorption , aqueous solution , gibbs isotherm , homologous series , alkyl , thermodynamics of micellization , micelle , sodium , pulmonary surfactant , polar , inorganic chemistry , organic chemistry , thermodynamics , biochemistry , physics , astronomy
A homologous series of anionic surfactants, namely, sodium‐ N ‐(alkyloxycarbonyl) alanine (where alkyl=octyl‐, dodecyl‐, hexadecyl‐, and octadecyl‐) were synthesized having the formula: R‐OCO‐CH 2 NH‐CH 2 ‐CH 2 ‐COONa. Surface properties of their solutions, including surface tension, critical micelle concentration, effectiveness, maximum surface excess, and minimum surface area, were investigated for different concentrations at 25°C. The effects of these surfactants on the solubilization of a polar and a nonpolar solute were studied. Standard free energies of micellization and adsorption were calculated for the prepared surfactants in aqueous solution.