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Issue 11, 2017
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High performance anti-corrosive epoxy–titania hybrid nanocomposite coatings

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Abstract

Mechanical stability, surface hydrophobicity, and thermal stability of anticorrosive polymeric coatings play a significant role in technological and industrial fields. In view of this, the present study demonstrates the design of transparent organic–inorganic hybrid nanocomposite coatings with improved mechanical strength and barrier properties. Herein, a suspension was formulated containing in situ grown titania (–O–Ti–O–) from titanium isopropoxide (TIP), diglycidyl ethers of bisphenol-A (DGEBA), and polyamide (PA). TIP simultaneously acts as a condensation agent, bridging agent (–O–Ti–O), as well as an inorganic surface modifier to epoxy resin and increases the water contact angle due to topographical improvement via optimum cross-linked surface density. The surface, morphological, thermal, and electrochemical techniques highlight broader application areas for these hybrid polymeric materials. The lowest Icorr value of 2.5211 × 10−10 for DGE–TiO2–PA hybrid coatings compared to those of DGE–PA (2.1029 × 10−7), CS (8.9131 × 10−5), and other reported coating systems in saline (3.5 and 5 weight% NaCl) environments projects DGE–TiO2–PA as a potential anticorrosive coating material.

Graphical abstract: High performance anti-corrosive epoxy–titania hybrid nanocomposite coatings

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Publication details

The article was received on 13 Dec 2016, accepted on 24 Apr 2017 and first published on 26 Apr 2017


Article type: Paper
DOI: 10.1039/C6NJ03906E
Citation: New J. Chem., 2017,41, 4599-4610
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    High performance anti-corrosive epoxy–titania hybrid nanocomposite coatings

    A. Ghosal and S. Ahmad, New J. Chem., 2017, 41, 4599
    DOI: 10.1039/C6NJ03906E

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