Cellulose acetate fibers as corrosion inhibitor delivery system for carbon steel

Author(s)

Yamanaka, V. ; Chagas, P. A. M. ; Ferreira, V. H. M. M. ; Otoni, C. G. ; Aguiar, M. L. ; Koga, G. Y.

• Document type: Journal article
• Source: Materials Letters; v. 377, p. 5-pg., 2024-09-18.

Abstract

This study evaluated the effectiveness of electrospun cellulose acetate fibers (CAFs) containing oleic acid (OA) for corrosion inhibition on carbon steel in chloride-rich environments. By varying the OA content, CAFs of different thicknesses were produced. Potentiodynamic polarization showed that steel coated with OA-containing CAFs had enhanced corrosion resistance, with higher corrosion potential (E-corr) and lower corrosion current density (i(corr)). The electrochemical impedance spectroscopy (EIS) results for the dip-coated sample showed an impedance increase of approximately 20x (from 2 to 40 k Omega cm(2)), and a capacitance reduction from 10(-6) to 10(-8) F cm(-2), compared to the untreated sample. The protective effect remained even after 48 h of exposure. These findings suggest CAFs as effective carriers for delivering OA inhibitors, offering a promising solution for corrosion mitigation in saline environments. (AU)

• FAPESP's process: 21/12071-6 - Tailoring colloids through supramolecular interactions: from fundamentals to applications
• Grantee: Watson Loh
• Support Opportunities: Research Projects - Thematic Grants