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Mechanically robust hydrophobic interpenetrating polymer network-based nanocomposite of hyperbranched polyurethane and polystyrene as an effective anticorrosive coating

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Abstract

Corrosion of metal surfaces is one of the biggest economic burdens encountered by our advanced metal furnished world and hence protection of them from corrosion got a prime importance of research. Herein, we demonstrated the fabrication of a new protective coating through the interpenetration of bio-based polyurethane and polystyrene with a very minimal amount (0.01–0.1 weight%) of Si/RGO nanohybrid loading. The fabricated nanocomposites showed an excellent improvement in mechanical properties (tensile strength: 148.9–198.9%), thermal stability (initial degradation temperature: 119.1–123.9%) and surface hydrophobicity (static contact angle: 104–114%) upon a very minimal amount of nanohybrid loading. Excellent anticorrosion activity (corrosion inhibition efficiency ∼99.99%) of the fabricated nanocomposites was confirmed from the electrochemical corrosion studies. Most interestingly, the corrosion rate of the bare metal plate reduced significantly (∼7.5 × 106 order) after coating with the nanocomposite containing 0.1 weight% of the nanohybrid. Hence, the fabricated nanocomposites have immense prospects to provide a new route towards the development of mechanically tough anticorrosive functional materials.

Graphical abstract: Mechanically robust hydrophobic interpenetrating polymer network-based nanocomposite of hyperbranched polyurethane and polystyrene as an effective anticorrosive coating

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Article information


Submitted
18 Jan 2020
Accepted
07 Mar 2020
First published
12 Mar 2020

New J. Chem., 2020, Advance Article
Article type
Paper

Mechanically robust hydrophobic interpenetrating polymer network-based nanocomposite of hyperbranched polyurethane and polystyrene as an effective anticorrosive coating

T. Ghosh and N. Karak, New J. Chem., 2020, Advance Article , DOI: 10.1039/D0NJ00322K

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