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Preparation of supramolecular corrosion-inhibiting nanocontainers for self-protective hybrid nanocomposite coatings

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Abstract

Smart corrosion-inhibiting coatings generate or release an inhibitor only when demanded by the initiation of corrosion. Supramolecular nanocontainers of the α-cyclodextrin (α-CD) corrosion inhibitor were prepared by inclusion complex (IC) formation between α-CD and 2-mercaptobenzothiazole (MBT) or 2-mercaptobenzimidazole (MBI) under various conditions (at room temperature and under sonic energy). The structure of the supramolecular nanocontainers was characterized by hydrogen nuclear magnetic resonance (1H-NMR), x-ray diffraction (XRD), scanning electron microscopy (SEM) and fourier transform infrared spectroscopy (FTIR). Supramolecular nanocontainer formation between MBT and MBI with α-CD in solid phase was emphasized by the significant differences between the 1H-NMR, FTIR and XRD spectra of the physical mixtures with respect to those of the complexes. The crystalline complexes adopted a head to head channel-type and cage conformation for α-CD/MBT and α-CD/MBI inclusion complexes, respectively.

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Acknowledgments

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

    Sahar Amiri & Azam Rahimi

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

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Amiri, S., Rahimi, A. Preparation of supramolecular corrosion-inhibiting nanocontainers for self-protective hybrid nanocomposite coatings. J Polym Res 21, 566 (2014). https://doi.org/10.1007/s10965-014-0566-5

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  • DOI: https://doi.org/10.1007/s10965-014-0566-5

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