Investigation of the Impact of Hydrophobic Chains on the Corrosion Inhibition Properties of Triazine-Based Bisquaternary Ammonium Salts
Year: 2025
Type: article
Abstract: Surface activity parameters such as critical micelle concentration (CMC), saturation adsorption (Гmax), and limiting molecular area (Amin) of three triazinyl bisquaternary ammonium salts with different hydrophobic chain lengths (C6-2-C6, C8-2-C8 and C12-2-C12) were analyzed from surface tension tests. The results showed that the CMC value of C12-2-C12 was much lower (0.026 mmol/L) than that of C6-2-C6 and C8-2-C8. The corrosion inhibition performances of three triazinyl bisquaternary ammonium salts on Q235 in 1 mol/L HCl solution were investigated by weight loss measurements and electrochemistry measurements. The results showed that the longer the hydrophobic chain length, the better the corrosion inhibition performance at the same concentration. The corrosion inhibition efficiencies of C12-2-C12, C8-2-C8 and C6-2-C6 at 0.2 mmol/L were 98.10%, 96.09% and 94.64%, respectively. Surface analysis and quantum chemical calculations showed that the three triazinyl bisquaternary ammonium salts can be adsorbed on the surface of carbon steel effectively to inhibit the corrosion of the carbon steel surface.
Source: Journal of Oleo Science
DOI: 10.5650/jos.ess25003
Institution: North University of China
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $301
Funder: North University of China
OpenAlex ID: W4411796276