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Corrosion inhibition of mild steel by amphoteric surfactants derived from aspartic acid
Author(s) -
Morsi M. S.,
Barakat Y. F.,
ElSheikh R.,
Hassan A. M.,
Baraka A.
Publication year - 1993
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.19930440705
Subject(s) - steric effects , moiety , corrosion , adsorption , alkyl , cationic polymerization , chemistry , methylene , carbon steel , methylene blue , molecule , inorganic chemistry , organic chemistry , photocatalysis , catalysis
The inhibition of mild steel corrosion/in 0.5 M HCl solution by amphoteric surfactants (which contain both an anionic and a cationic moiety in the same molecule) of general formula:(R alkyl group of C 10, 11, 12, 13, 15 and 17 ) is shown to confirm Langmuir's adsorption isotherms. At a given concentration of surfactants, the inhibiting action increases with the increase of carbon chain length. The influence of both inductive and steric hindrance effects of methylene groups in –R on the inhibition efficiency has also been mentioned.