Eco-Friendly Waterborne Polyurethane Coating Modified with Ethylenediamine-Functionalized Graphene Oxide for Enhanced Anticorrosion Performance

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dc.contributor.authorAramayo M.A.F.
dc.contributor.authorFerreira Fernandes R.
dc.contributor.authorSantos Dias M.
dc.contributor.authorBozzo S.
dc.contributor.authorSteinberg D.
dc.contributor.authorRocha Diniz da Silva M.
dc.contributor.authorMaroneze C.M.
dc.contributor.authorde Carvalho Castro Silva C.
dc.date.accessioned2024-10-01T06:10:19Z
dc.date.available2024-10-01T06:10:19Z
dc.date.issued2024
dc.description.abstract© 2024 by the authors.This study explores the potential of graphene oxide (GO) as an additive in waterborne polyurethane (WPU) resins to create eco-friendly coatings with enhanced anticorrosive properties. Traditionally, WPU’s hydrophilic nature has limited its use in corrosion-resistant coatings. We investigate the impact of incorporating various GO concentrations (0.01, 0.1, and 1.3 wt%) and functionalizing GO with ethylenediamine (EDA) on the development of anticorrosive coatings for carbon steel. It was observed, by potentiodynamic polarization analysis in a 3.5% NaCl solution, that the low GO content in the WPU matrix significantly improved anticorrosion properties, with the 0.01 wt% GO-EDA formulation showing exceptional performance, high Ecorr (−117.82 mV), low icorr (3.70 × 10−9 A cm−2), and an inhibition corrosion efficiency (η) of 99.60%. Raman imaging mappings revealed that excessive GO content led to agglomeration, creating pathways for corrosive species. In UV/condensation tests, the 0.01 wt% GO-EDA coating exhibited the most promising results, with minimal corrosion products compared to pristine WPU. The large lateral dimensions of GO sheets and the cross-linking facilitated by EDA enhanced the interfacial properties and dispersion within the WPU matrix, resulting in superior barrier properties and anticorrosion performance. This advancement underscores the potential of GO-based coatings for environmentally friendly corrosion protection.
dc.description.issuenumber17
dc.description.volume29
dc.identifier.doi10.3390/molecules29174163
dc.identifier.issnNone
dc.identifier.urihttps://dspace.mackenzie.br/handle/10899/39465
dc.relation.ispartofMolecules
dc.rightsAcesso Aberto
dc.subject.otherlanguageanticorrosion
dc.subject.otherlanguagecoating
dc.subject.otherlanguageeco-friendly
dc.subject.otherlanguagefunctionalization
dc.subject.otherlanguagegraphene oxide
dc.subject.otherlanguagelow additive content
dc.subject.otherlanguageUV resistance
dc.subject.otherlanguagewater resistance
dc.subject.otherlanguagewaterborne polyurethane
dc.titleEco-Friendly Waterborne Polyurethane Coating Modified with Ethylenediamine-Functionalized Graphene Oxide for Enhanced Anticorrosion Performance
dc.typeArtigo
local.scopus.citations4
local.scopus.eid2-s2.0-85204136790
local.scopus.updated2025-04-01
local.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85204136790&origin=inward
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