Cation effect in the corrosion inhibition properties of coumarate ionic liquids and acrylic uv-coatings Udabe, Esther, Somers, Anthony, Forsyth, Maria and Mecerreyes, David 2020, Cation effect in the corrosion inhibition properties of coumarate ionic liquids and acrylic uv-coatings, Polymers, vol. 12, no. 11, pp. 1-16, doi: 10.3390/polym12112611. Attached Files Name Description MIMEType Size Downloads Title Cation effect in the corrosion inhibition properties of coumarate ionic liquids and acrylic uv-coatings Author(s) Udabe, Esther Somers, Anthony orcid.org/0000-0002-0220-2904 Forsyth, Maria orcid.org/0000-0002-4273-8105 Mecerreyes, David Journal name Polymers Volume number 12 Issue number 11 Article ID 2611 Start page 1 End page 16 Total pages 16 Publisher MDPI AG Place of publication Basel, Switzerland Publication date 2020-11 ISSN 2073-4360 2073-4360 Keyword(s) corrosion inhibitors ionic liquids poly(ionic liquid)s Summary Chromate free corrosion inhibitors are searched for to mitigate the economic loss caused by mid-steel corrosion. Here, we show metal-free organic inhibitors having free coumarate anions that can be used either as direct corrosion inhibitors or incorporated into a polymer coating obtained by UV-curing. Four different ionic liquid monomers and polymer coatings with hexoxycoumarate anion and different polymerizable counter cations were investigated. Potentiodynamic polarization, electrochemical impedance spectroscopy, and surface analyses have verified their corrosion inhibition performance on a mild steel AS1020 surface. In the case of the coumarate ionic liquid monomers, the most promising inhibitor is the one coupled with the ammonium cation, showing an inhibition efficiency of 99.1% in solution followed by the imidazolium, pyridinium, and anilinium. Next, the ionic liquid monomers were covalently integrated into an acrylic polymer coating by UV-photopolymerization. In this case, the barrier effect of the polymer coating is combined with the corrosion inhibitor effect of the pendant coumarate anion. Here, the best polymer coatings are those containing 20% imidazolium and pyridinium cations, presenting a greater impedance in the EIS (Electrochemical Impedance Spectroscopy) measurements and less evidence of corrosion in the scribe tests. This article shows that the cationic moiety of coumarate based ionic liquids and poly(ionic liquid)s has a significant effect on their excellent corrosion inhibition properties for a mild steel surface exposed to aqueous chloride solutions. Language eng DOI 10.3390/polym12112611 Indigenous content off Field of Research 091209 Polymers and Plastics 091205 Functional Materials 030604 Electrochemistry 03 Chemical Sciences 09 Engineering Socio Economic Objective 870302 Metals (e.g. Composites HERDC Research category C1 Refereed article in a scholarly journal ERA Research output type C Journal article Grant ID European Union’s Horizon 2020 research and innovation program under the Marie Sklodowska-Curie grantagreement No 823989 Spanish MINECO for a FPU fellowship Australian Research Council through a Discovery Project, DP180101465 Free to Read? Yes Persistent URL http://hdl.handle.net/10536/DRO/DU:30145945 Document type: Journal Article Collections: Institute for Frontier Materials Open Access Collection GTP Research Related Links Link Description Link to full-text (open access)     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au. Versions Version Filter Type Fri, 27 Nov 2020, 07:11:16 EST Sat, 28 Nov 2020, 04:01:23 EST Mon, 30 Nov 2020, 06:59:10 EST Wed, 09 Dec 2020, 05:07:00 EST Wed, 16 Dec 2020, 08:14:32 EST Wed, 16 Dec 2020, 08:17:13 EST Sat, 09 Jan 2021, 01:38:48 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 28 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Fri, 27 Nov 2020, 07:11:16 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.