Abstract
Three new environmental friendly surfactants of cationic type were synthesized using natural vanillin. Their chemical structures were determined using elemental, IR, 1H NMR and 13C NMR spectroscopic analyses. The surface activity of the synthesized surfactant solutions was determined using surface and interfacial tension measurements at 25 °C. The emulsification powers of these surfactants were measured against light paraffin oil. The biodegradation ability of the surfactants reached the maximum (75%) within 21 days. Corrosion inhibition characteristics of the green surfactants were determined on carbon steel in 1 N HCl at 25 °C using gravimetric and potentiodynamic techniques. The adsorption of inhibitors on carbon steel in 1 N HCl follows Langmuir adsorption isotherm. Thermodynamic adsorption parameters ( K ads, Δ G ads) of studied inhibitors were calculated using the Langmuir adsorption isotherm. The Tafel polarization results indicate that the inhibitors act as mixed inhibitors. The inhibition efficiency increases with an increase in the inhibitor dose, side chain length and surface activity of the inhibitors. The maximum inhibition efficiencies ranged between 95.09% and 98.53% at 400 ppm.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Colloids and Surfaces A: Physicochemical and Engineering Aspects
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
