02065nas a2200253 4500008004100000022001400041245011600055210006900171260006800240300001200308490000700320520112700327653002401454653003301478653002401511653003501535653001001570653002201580653002401602100001501626700002001641700001801661856013201679 2005 eng d a0021-899500aElectrochemical synthesis and corrosion protection properties of poly(o-toluidine) coatings on low carbon steel0 aElectrochemical synthesis and corrosion protection properties of a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcMAY a685-6950 v963 a

Uniform and strongly adherent poly(o-toluidine) (POT) coatings have been synthesized on low carbon steel (LCS) substrates by electrochemical polymerization (ECP) of o-toluidine under cyclic voltammetric conditions from an aqueous sodium tartrate solution. Cyclic voltammetry (CV), UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) measurements, and scanning electron microscopy (SEM) were used to characterize these coatings, which indicates that the sodium tartrate is a suitable medium for the ECP of o-toluidine and it occurs without noticeable dissolution of LCS. Corrosion protection properties of the POT coatings were evaluated in aqueous 3% NaCl by the potentiodynamic polarization measurements and CV. The result of the potentiodynamic polarization demonstrates that the POT coating has ability to protect the LCS against corrosion. The corrosion potential was about 334 mV more positive in aqueous 3% NaCl for the POT-coated LCS than that of bare LCS and reduces the corrosion rate of LCS almost by a factor of 50. (c) 2005 Wiley Periodicals, Inc.

10aconducting polymers10aCorrosion resistant coatings10acyclic voltarnmetry10aElectrochemical polymerization10aFT-IR10aPoly(o-toluidine)10aUV-vis spectroscopy1 aShinde, V.1 aSainkar, S., R.1 aPatil, P., P. uhttps://library.ncl.res.in/content/electrochemical-synthesis-and-corrosion-protection-properties-polyo-toluidine-coatings-low-002413nas a2200253 4500008004100000022001400041245008700055210006900142260006900211300001400280490000800294520152300302653002401825653001101849653003401860653002301894653003101917100002401948700002001972700001801992700002002010700001802030856011102048 2006 eng d a0257-897200aFormation of poly(o-anisidine) coatings on copper from aqueous salicylate solution0 aFormation of polyoanisidine coatings on copper from aqueous sali aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAY a5557-55650 v2003 a

Poly(o-anisidine) coatings have been electrosynthesized by using cyclic voltammetry on copper from an aqueous salicylate medium. Cyclic voltammetry, UV-visible absorption spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray photoelectron spectroscopy were used to characterize these coatings, which indicates that the aqueous salicylate solution is a suitable medium for the electrochemical polymerization of o-anisidine on copper substrate. Cyclic voltammetry accompanied by the X-ray photoelectron spectroscopy was used to characterize the surface modifications induced by polarizing the copper substrate in the aqueous salicylate solution (without monomer). It was shown that the polarization of the copper in the aqueous salicylate medium results into the passivation of its surface via the formation of Cu(2)O and/or copper salicylate complex. It was found that the electrochemical polymerization of o-anisidine takes place after the passivation of the copper substrate via fort-nation of Cu(2)O and/or copper salicylate complex and results into the formation of shiny, uniform and strongly adherent poly(o-anisidine). The optical absorption spectroscopy reveals the formation of emraldine salt form of poly(o-anisidine). This study offers an electrochemical polymerization recipe to synthesize strongly adherent poly(o-anisidine) coating on copper from aqueous media for possible use in corrosion protection application. (c) 2005 Elsevier B.V. All rights reserved.

10aconducting polymers10aCopper10acorrosion protective coatings10acyclic voltammetry10apoly(o-anisidine) coatings1 aChaudhari, Sudeshna1 aMandale, A., B.1 aPatil, K., R.1 aSainkar, S., R.1 aPatil, P., P. uhttps://library.ncl.res.in/content/formation-polyo-anisidine-coatings-copper-aqueous-salicylate-solution-002265nas a2200217 4500008004100000022001400041245011800055210006900173260006800242300001400310490000800324520145500332653001301787653002401800653002101824653001401845100001801859700002001877700001801897856013201915 2007 eng d a0021-899500aSynthesis of poly(aniline-co-o-toluidine) coatings and their corrosion-protection performance on low-carbon steel0 aSynthesis of polyanilinecootoluidine coatings and their corrosio a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcFEB a1868-18780 v1033 a

Strongly adherent poly(aniline-co-o-toluidine) coatings were synthesized on low-carbon-steel substrates by the electrochemical copolymerization of aniline with o-toluidine with sodium tartrate as the supporting electrolyte. These coatings were characterized with cyclic voltammetry, ultraviolet-visible absorption spectroscopy, Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, and scanning electron microscopy. The formation of the copolymer with the mixture of monomers in the aqueous sodium tartrate solution was ascertained by a critical comparison of the results obtained from the polymerizations of the individual monomers, aniline and o-toluidine. The optical absorption spectrum of the copolymer was drastically different from the spectra of the respective homopolymers, polyaniline and poly(o-toluidine). The extent of the corrosion protection offered by poly(aniline-co-o-toluidine) coatings to low-carbon steel was investigated in aqueous 3% NaCl solutions by open-circuit-potential measurements and a potentiodynamic polarization technique. The results of the potentiodynamic polarization measurements showed that the poly(aniline-co-o-toluidine) coatings provided more effective corrosion protection to low-carbon steel than the respective homo-polymers. The corrosion rate depended on the feed ratio of o-toluidine used for the synthesis of the copolymer coatings. (c) 2006 Wiley Periodicals, Inc.

10aCoatings10aconducting polymers10acopolymerization10asynthesis1 aPawar, Pritee1 aSainkar, S., R.1 aPatil, P., P. uhttps://library.ncl.res.in/content/synthesis-polyaniline-co-o-toluidine-coatings-and-their-corrosion-protection-performance-low