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Self-healing hybrid nanocomposite coatings with encapsulated organic corrosion inhibitors

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Abstract

To improve the protective properties of sol–gel-derived hybrid coatings against corrosion, encapsulated corrosion inhibitors (2-mercaptobenzothiazole (MBT) and 2-mercaptobenzimidazole (MBI)) were incorporated into hybrid coatings in the presence of α-cyclodextrin (α-CD). The encapsulation of corrosion inhibitors occurs through the formation of an inclusion complex between α-CD and corrosion inhibitors, which become active in corrosive electrolytes and can slowly diffuse out of the host material to ensure continuous delivery of the inhibitors to corrosion sites and long-term corrosion protection. Structural characterization of the hybrid coatings was performed using EIS, SEM coupled with EDX, and FTIR.

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Acknowledgments

Financial support from Iran National Science Foundation (Grant No. 92020998) is gratefully acknowledged.

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Authors and Affiliations

  1. Department of Polymer Science, Facualty of Science, Iran Polymer and Petrochemical Institute, P.O. Box: 14965/115, Tehran, I.R., Iran

    Azam Rahimi & Sahar Amiri

Authors
  1. Azam Rahimi
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  2. Sahar Amiri
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Correspondence to Sahar Amiri.

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Rahimi, A., Amiri, S. Self-healing hybrid nanocomposite coatings with encapsulated organic corrosion inhibitors. J Polym Res 22, 624 (2015). https://doi.org/10.1007/s10965-014-0624-z

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  • DOI: https://doi.org/10.1007/s10965-014-0624-z

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