Oleic acid-grafted chitosan/graphene oxide composite coating for corrosion protection of carbon steel. (20th October 2016)

• Record Type: Journal Article
• Authors: Fayyad, Eman M.; Sadasivuni, Kishor Kumar; Ponnamma, Deepalekshmi; Al-Maadeed, Mariam Al Ali
• Is Part Of: Carbohydrate polymers. Volume 151(2016)
• Page Start: 871
• Page End: 878
• Publication Date: 2016-10-20
• Subjects: Corrosion -- Permeability -- Hydrophobicity -- Coating -- Grafting -- Chitosan; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2016.06.001
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: Chitosan/graphene oxide nanocomposites establish a good role in preventing the corrosion of carbon steel. Graphene oxide has a good interfacial interaction with chitosan chains. Functionalization of the nanocomposite with oleic acid increases its corrosion protection by hundred folds. Abstract: An anticorrosion coating film based on the formation of nanocomposite coating is reported in this study. The composite consisted of chitosan (green matrix), oleic acid, and graphene oxide (nano filler). The nanocomposite coating was arranged on the surface of carbon steel, and the corrosion resistance was monitored using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PP). Compared to the pure chitosan (CS) coating, the corrosion resistance of oleic acid-modified chitosan/graphene oxide film (CS/GO-OA) is increased by 100 folds. Since the well-dispersed smart grafted nanolayers delayed the penetration rate of corrosive species and thus maintained long term anticorrosive stability which is correlated with hydrophobicity and permeability.