Polyphenyl oxide modified graphene oxide nanocomposite in epoxy coatings.

The researchers reported anti-corrosion and anti-fouling properties of epoxy-based polyphenylamine (PANI) - graphene oxide nanochip (GONs) coatings.
, THEANI-based nanocomposive materials with different GON fractions are synthesized through the in-place polymerization process. In the presence of (NH4) 2S2O8 as an effective oxidant, an improved Humers method is used to prepare a well-dispersed GON

. They used ultrasonic baths to spontaneously aggregate in-place at constant temperatures of 0 degrees C to produce homogenousANI-GON nanocomposomes characterized by X-ray diffraction (XRD), Fourier Transfer Infrared Spectroscopy (FTIR) and field emission scanning electron microscope (FESEM) technology. The nanocomposome is mixed into epoxy resin in different proportions to form an epoxy/PANI-GON coating.
significantly improved corrosion and anti-fouling performance
Epoxy/PANI-GON immersed in carbon steel (St-37 grade) substrates showed significant corrosion and anti-fouling performance improvements. After 192 hours of salt water immersion, the maximum corrosion resistance measured by electrochemical impedance spectrometry (EIS) technology was 2.70×106?cm2. This high corrosion resistance can be achieved by inhibiting the diffusion process against the corrosive environment. In addition, for the most effective anti-fouling composite coatings, epoxy 6 and 12 wt%PANI / GON observed higher anti-fouling protection.
the study was published in the Journal of Coating Technology and Research, July 2019, volume 16, Issue 4, pp. 983-997.
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