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Comparison of a Cationic Gemini Surfactant and the Corresponding Monomeric Surfactant for Corrosion Protection of Mild Steel in Hydrochloric Acid
Author(s) -
Mahdavian Mohammad,
TehraniBagha Ali Reza,
Holmberg Krister
Publication year - 2011
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/s11743-011-1252-9
Subject(s) - chemistry , pulmonary surfactant , hydrochloric acid , cationic polymerization , corrosion , monomer , dielectric spectroscopy , adsorption , bromide , electrolyte , inorganic chemistry , surface tension , corrosion inhibitor , electrochemistry , nuclear chemistry , organic chemistry , polymer , electrode , biochemistry , physics , quantum mechanics
A cationic gemini surfactant, N , N ′‐didodecyl‐ N , N , N ′, N ′‐tetramethyl‐1,4‐butanediammonium dibromide (12‐4‐12) and the corresponding monomeric surfactant dodecyltrimethylammonium bromide were compared with respect to corrosion inhibition efficiency in 1 M hydrochloric acid solution. Polarization and electrochemical impedance spectroscopy were used to evaluate corrosion inhibition. The 12‐4‐12 surfactant showed an extremely high corrosion inhibition efficiency at very low concentration. Surface tension measurements performed under the strongly acidic conditions revealed that the gemini surfactant is remarkably electrolyte tolerant, which is beneficial for adsorption at the steel surface.