Issue 1, 2023

Poly(ionic liquid)s having coumarate counter-anions as corrosion inhibitors in acrylic UV coatings

Abstract

Organic inhibitor alternatives to toxic chromium treatments are being sought to protect metal surfaces. One of the limitations of the organic inhibitors is leaching out of the coatings limiting their performance. This work investigates the ionic attachment of coumarate inhibitors into a poly(ionic liquid), polyDADMA coumarate, and its application in a UV-cured acrylic coating. The corrosion protection of the polyDADMA coumarate coating was evaluated by electrochemical techniques including electrochemical impedance spectroscopy (EIS) and surface characterization. The adhesion of the acrylic UV coating formulation onto the steel surface was also investigated. The results showed that the presence of poly(ionic liquid) coumarate in the blend improves the adhesion level as well as providing active corrosion protection.

Graphical abstract: Poly(ionic liquid)s having coumarate counter-anions as corrosion inhibitors in acrylic UV coatings

Supplementary files

Article information

Article type
Paper
Submitted
26 Apr 2023
Accepted
29 Jun 2023
First published
20 Jul 2023
This article is Open Access
Creative Commons BY license

RSC Appl. Polym., 2023,1, 55-63

Poly(ionic liquid)s having coumarate counter-anions as corrosion inhibitors in acrylic UV coatings

D. Minudri, A. Somers, N. Casado, M. Forsyth and D. Mecerreyes, RSC Appl. Polym., 2023, 1, 55 DOI: 10.1039/D3LP00017F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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