01929nas a2200217   4500008004100000022001400041245008300055210006900138260006900207300001200276490000700288520116800295653002501463653001001488653001601498653001901514100002201533700002301555700001701578856011601595       2009                        eng d  a0300-944000aEpoxy powder coatings containing polyaniline for enhanced corrosion protection0 aEpoxy powder coatings containing polyaniline for enhanced corros  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAR  a383-3860 v643 a<p>Incorporation of polyaniline (PANI) in epoxy type powder coating formulations has not been attempted earlier. Using specific grade of PANI with low doping, it can be incorporated in epoxy powder coating formulations by twin screw extrusion process. The powder formulations were deposited on steel substrates by electrostatic spray coating at -60 W and baked at 140 degrees C for 20 min. These were extensively tested for corrosion resistance by exposure to hot saline conditions followed by electrochemical impedance spectroscopy and also salt spray testing. PANI incorporated coatings showed no deterioration even after 1400 h of hot (65 degrees C) saline treatment. The coatings intentionally scratched also exhibited self healing property and there was no rust formation even after prolonged exposure to hot saline conditions. These results could be explained on the basis of additional crosslinking due to PANI, as confirmed by DSC results, which gave rise to improved barrier property and self healing was associated with the scavenging of ions by PANI which prevented corrosion of the underlying substrate. (C) 2008 Elsevier B.V. All rights reserved.</p>10aCorrosion resistance10aEpoxy10apolyaniline10aPowder coating1 aRadhakrishnan, S.1 aSonawane, Narendra1 aSiju, C., R.  uhttps://library.ncl.res.in/content/epoxy-powder-coatings-containing-polyaniline-enhanced-corrosion-protection-0