01969nas a2200253 4500008004100000022001400041245008700055210006900142260006900211300001400280490000800294520108000302653003201382653001101414653003301425653002301458653003101481100001501512700002001527700001801547700002001565700001801585856011201603 2006 eng d a0257-897200aPoly(o-toluidine) coatings on copper: electrochemical synthesis from aqueous media0 aPolyotoluidine coatings on copper electrochemical synthesis from aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcAPR a5094-51010 v2003 a

Poly(o-toluidine) (POT) coatings were synthesized on copper (Cu) by electrochemical polymerization of o-toluidine using aqueous sodium oxalate solution as supporting electrolyte. The resulting coatings were uniform, compact and strongly adherent to the Cu substrate. These coatings were characterized by using cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD) measurements and X-ray photoelectron spectroscopy (XPS). The results of these studies reveal that the sodium oxalate is suitable supporting electrolyte for the electrochemical polymerization of o-toluidine on Cu substrate. It is found that the electrochemical polymerization of o-toluidine takes place after the passivation of the Cu substrate via formation of copper oxalate (CuC2O4, H2O) layer, which is confirmed by XRD and XPS. The optical absorption spectroscopy study reveals the exclusive formation of the pernigraniline base (PB) form of POT. (c) 2005 Elsevier B.V. All rights reserved.

10aConducting polymer coatings10aCopper10aCorrosion resistant coatings10acyclic voltammetry10apoly(o-toluidine) coatings1 aShinde, V.1 aMandale, A., B.1 aPatil, K., R.1 aGaikwad, A., B.1 aPatil, P., P. uhttp://library.ncl.res.in/content/polyo-toluidine-coatings-copper-electrochemical-synthesis-aqueous-media-002127nas a2200241 4500008004100000022001400041245006500055210006200120260006900182300001000251490000700261520128300268653003201551653003301583653002301616653003501639653003401674653002001708100002401728700002001752700001801772856009501790 2007 eng d a0300-944000aPoly(o-ethylaniline) coatings for stainless steel protection0 aPolyoethylaniline coatings for stainless steel protection aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcJAN a54-630 v583 a

The poly(o-ethylaniline) coatings were electrochemically synthesized on 304-stainless steel by using cyclic voltammetry from an aqueous salicylate medium. Cyclic voltammetry, UV-vis absorption spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy were used to characterize these coatings, which indicates that the aqueous salicylate solution is a suitable medium for the electrochemical polymerization of o-ethyaniline on 304-stainless steel. The performance of poly(o-ethylaniline) as protective coating against corrosion of 304-stainless steel in aqueous 3% NaCl was evaluated by the open circuit potential measurements, potentiodynamic polarization technique, cyclic potentiodynamic polarization measurements and electrochemical impedance spectroscopy. The results of the potentiodynamic polarization and cyclic potentiodynamic polarization demonstrate that the poly(o-ethylaniline) coating provides excellent protection to both localized and general corrosion of 304-stainless steel. The corrosion potential was about 0.190 V more positive in aqueous 3% NaCl for the poly(o-ethylaniline) coated steel than that of bare steel and reduces the corrosion rate of steel almost by a factor of 20. (c) 2006 Elsevier B.V. All rights reserved.

10aConducting polymer coatings10aCorrosion resistant coatings10acyclic voltammetry10aElectrochemical polymerization10apoly(o-ethylaniline) coatings10astainless steel1 aChaudhari, Sudeshna1 aSainkar, S., R.1 aPatil, P., P. uhttp://library.ncl.res.in/content/polyo-ethylaniline-coatings-stainless-steel-protection-002309nas a2200253 4500008004100000022001400041245009400055210006900149260007300218300001200291490000600303520137100309653001001680653002401690653003301714653002301747653004301770653003501813653002201848100002401870700002001894700001801914856012301932 2009 eng d a1567-173900aPoly(o-anisidine) coatings on brass: synthesis, characterization and corrosion protection0 aPolyoanisidine coatings on brass synthesis characterization and  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJAN a206-2180 v93 a

Poly(o-anisidine) (POA) coatings were synthesized on brass by electrochemical polymerization of o-anisidine in aqueous salicylate solution by using cyclic voltammetry. These coatings were characterized by cyclic voltammetry, UV-visible absorption spectroscopy., Fourier transform infrared (FTIR) spectroscopy and scanning electron microscopy (SEM). The corrosion protection aspects of POA coatings on brass in aqueous 3% NaCl solution were investigated by potentiodynamic polarization technique and electrochemical impedance spectroscopy (EIS). The potentiodynamic polarization measurements show that the POA coating has ability to protect the brass against corrosion. The corrosion potential was about 0.204 V versus SCE more positive for the POA coated brass than that of uncoated brass and reduces the corrosion rate of brass almost by a factor of 800. The corrosion behavior of the POA coatings was also investigated by EIS through immersion tests performed In aqueous 3% NaCl solution. The evolution of the impedance parameters with the immersion time was studied and the results Show that the POA acts as a protective coating on brass against corrosion in 3% NaCl solution. The water uptake and delamination area were also determined to further support the corrosion protection performance of the POA coating. (C) 2008 Elsevier B.V. All rights reserved.

10abrass10aconducting polymers10aCorrosion resistant coatings10acyclic voltammetry10aElectrochemical impedance spectroscopy10aElectrochemical polymerization10apoly(o-anisidine)1 aChaudhari, Sudeshna1 aGaikwad, A., B.1 aPatil, P., P. uhttp://library.ncl.res.in/content/polyo-anisidine-coatings-brass-synthesis-characterization-and-corrosion-protection-0