02258nas a2200253   4500008004100000022001400041245008700055210006900142260010600211300001400317490000700331520135200338653001801690653001201708653002301720653001901743653002101762100002201783700001701805700002301822700001801845700002101863856012001884       2009                        eng d  a0013-468600aConducting polyaniline-nano-TiO2 composites for smart corrosion resistant coatings0 aConducting polyanilinenanoTiO2 composites for smart corrosion re  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcJAN  a1249-12540 v543 a<p>Coatings prepared from polyaniline-nano-TiO2 particles synthesized by in situ polymerization were found to exhibit excellent corrosion resistance much superior to polyaniline (PANI) in aggressive environments. The corrosion Studies were carried out on steel plates coated with these formulations containing 10 wt% polyaniline prepared with different concentrations of nano-TiO2. The electrochemical impedance spectroscopy was studied at periodic intervals during exposure to hot saline (65 degrees C) conditions for prolonged durations over a period of 90 h. The open circuit potential (OCP) was found to shift with time from -0.38 V SCE to more anodic side (-0.2 V SCE) much above that of bare steel (-0.5 VSCE). The presence of nano-TiO2 was found to be vital in the prevention of corrosion and the shift of OCP to anodic side. From these data, one could envisage more than 100 times improvement in the corrosion resistance especially for polyaniline prepared with 4.18 wt% nano-TiO2. The exceptional improvement of performance of these coatings has been associated with the increase in barrier to diffusion, prevention of charge transport by the nanosize TiO2, redox properties of polyaniline as well as very large surface area available for the liberation of dopant due to nano-size additive. (C) 2008 Elsevier Ltd. All rights reserved.</p>10aAnticorrosion10aCoating10aconducting polymer10aNano-composite10aTitanium dioxide1 aRadhakrishnan, S.1 aSiju, C., R.1 aMahanta, Debajyoti1 aPatil, Satish1 aMadras, Giridhar  uhttps://library.ncl.res.in/content/conducting-polyaniline-nano-tio2-composites-smart-corrosion-resistant-coatings-001929nas 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