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Corrosion inhibition of triethanolammonium bromide mono‐ and dibenzoate as cationic inhibitors in an acidic medium
Author(s) -
Negm Nabel A.,
Morsy Salwa M. I.
Publication year - 2005
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/s11743-005-0359-x
Subject(s) - chemistry , corrosion , alkyl , bromide , critical micelle concentration , adsorption , cationic polymerization , surface tension , micelle , nuclear chemistry , inorganic chemistry , organic chemistry , aqueous solution , physics , quantum mechanics
A weight loss technique was used to determine the corrosion inhibition efficiency of synthesized alkyl mono‐and dibenzoate triethanolammonium bromide derivatives (TEAMB, TEADB) in an acidic medium (2 N HCl) at different doses (50, 100, and 200 ppm). The results showed that monoderivatives had a higher corrosion inhibition efficiency than diderivatives. The results were correlated with several factors, including the alkyl chain length of the hydrophobic chains, interfacial tension (IT), critical micelle concentration (CMC), and adsorption free energy of these inhibitors. Increasing the geometric length of the alkyl chains in the synthesized inhibitors had an increasing effect on their corrosion inhibition efficiency, whereas decreasing the CMC and IT had an increasing effect on their tendency toward corrosion inhibition. The number of hydrophobic chains attached to the inhibitor molecules had a vital influence on their efficiency as corrosion inhibitors.