Corrosion Inhibition Properties of Some Novel N-Methyl Diethanolammonium Bromide Cationic Surfactants

A series of novel cationic surface-active agents containing two hydrophobic chains were evaluated for their corrosion inhibition efficiency at different doses using the weight loss method at 25 degree C. The applicability of these inhibitors for mild steel was examined using (4M HCl) at 50, 100 and 200 ppm of the inhibitor concentrations. The results were correlated to their chemical structures and their geometry. The results showed that increasing the hydrophobic chain length, as well as, the number of conjugated double bonds along the alkyl chains of these inhibitors increases their corrosion inhibition efficiency. The maximum corrosion inhibition efficiency of the synthesized inhibitors containing similar hydrophobic groups was discussed