01717nas a2200217 4500008004100000022001400041245009500055210006900150260006900219300001200288490000700300520095400307653001301261653001401274653001901288653001601307653000801323100001801331700002201349856012801371 2006 eng d a0300-944000aConducting polymer based hybrid nano-composites for enhanced corrosion protective coatings0 aConducting polymer based hybrid nanocomposites for enhanced corr aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcDEC a332-3360 v573 a

Hybrid composite coatings containing zinc oxide (ZnO) and polyaniline (PANI) as nano-additives dispersions were prepared with poly(vinyl acetate) (PVAc) as the major matrix. The steel plates dip-coated with these formulations were tested for corrosion protection by immersion in saline water over long periods. The Tafel plots for the determination of open circuit potential (OCP) and corrosion current (I-corr) were recorded. The coatings containing both ZnO and PANI showed improved corrosion resistance as compared to the single component coating. The I-corr values of PVAc-ZnO-PANI are found to be two-order magnitude lower than that of PVAc and PVAc-ZnO coatings. The results are explained on the basis of enhancement in barrier properties due to nano-particulate additives in PVAc-ZnO-PANI film together with the redox behaviour of PANI and protective oxide layer formation near the substrate. (C) 2006 Elsevier B.V All rights reserved.

10aCoatings10acorrosion10anano-additives10apolyaniline10aZnO1 aPatil, R., C.1 aRadhakrishnan, S. uhttps://library.ncl.res.in/content/conducting-polymer-based-hybrid-nano-composites-enhanced-corrosion-protective-coatings-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-low02028nas a2200253 4500008004100000022001400041245010000055210006900155260006800224300001200292490000800304520116300312653001301475653002401488653000901512653001901521653001401540100002401554700001801578700002001596700001801616700002001634856012001654 2007 eng d a0021-899500aUse of poly(o-toluidine)/ZrO2 nanocomposite coatings for the corrosion protection of mild steel0 aUse of polyotoluidineZrO2 nanocomposite coatings for the corrosi a111 RIVER ST, HOBOKEN, NJ 07030 USAbJOHN WILEY & SONS INCcOCT a220-2290 v1063 a

This study explored the possibility of using poly(o-toluidine) (POT)/ZrO2 nanocomposite coatings for the corrosion protection of mild steel in a chloride environment. POT/ZrO2 nanocomposite coatings were synthesized on steel substrates through an electrochemical route. These coatings were characterized with cyclic voltammetry, ultraviolet-visible absorption spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray photoelectron spectroscopy. The performance of POT/ZrO2 nanocomposites as protective coatings against the corrosion of mild steel in aqueous 3 wt % NaCl was evaluated with the potentiodynamic polarization technique and electrochemical impedance spectroscopy. The results of this study demonstrate that POT/ZrO2 nanocomposite coatings provide better protection for mild steel against corrosion than pure POT coatings. The corrosion potential was about 0.312 V versus a saturated calomel electrode, more positive in aqueous 3 wt % NaCl for the nanocomposite-coated steel than the uncoated steel, and the corrosion rate of steel was reduced by a factor of almost 51. (c) 2007 Wiley Periodicals, Inc.

10aCoatings10aconjugated polymers10aFTIR10aNanocomposites10asynthesis1 aChaudhari, Sudeshna1 aPatil, P., P.1 aMandale, A., B.1 aPatil, K., R.1 aSainkar, S., R. uhttps://library.ncl.res.in/content/use-polyo-toluidinezro2-nanocomposite-coatings-corrosion-protection-mild-steel-001894nas a2200205 4500008004100000022001400041245015100055210006900206260007400275300001400349490000800363520107500371653001301446653002101459653001301480653001301493653002401506100002901530856012901559 2015 eng d a1388-615000aCationic photopolymerization kinetics of neat coating formulations involving poly(propylene glycol) diglycidyl ether and glycerol diglycidyl ether0 aCationic photopolymerization kinetics of neat coating formulatio aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcDEC a1445-14540 v1223 a

Kinetic analysis of formulations based on poly(propylene glycol) diglycidyl ether and glycerol diglycidyl ether was carried out using photodifferential scanning calorimeter. The effects of formulation monomer ratios at different temperatures were studied as photocalorimetric optimization studies of formulation ratios involving diglycidyl ethers are less reported. The nature of cure was found to depend more on the in situ physical parameters rather than on the mechanism of the reaction. The variations in the observed kinetic parameters can be related to interplay of mobility of reactive species, distance of counter ion and the diffusional restrictions. The final conversion was found to increase with increase in poly(propylene glycol) diglycidyl ether content, while the thermal stability increased with an increase in glycerol diglycidyl ether content. Autocatalytic kinetic model was also evaluated, and the system underwent early gelation. The studies show that the intermediate formulations are promising compositions for surface-coating applications.

10aCoatings10aDiglycidyl ether10akinetics10aPhotoDSC10aPhotopolymerization1 aHarikrishna, Reghunathan uhttps://library.ncl.res.in/content/cationic-photopolymerization-kinetics-neat-coating-formulations-involving-polypropylene-002133nas a2200253 4500008004100000245009100041210006900132260000800201300001300209490000800222520132700230653001301557653001901570653005201589653002601641653002301667100001701690700001601707700001201723700001501735700002001750700001901770856009001789 2017 eng d00aMagnetic studies of SiO2 coated CoFe2O4 nanoparticles0 aMagnetic studies of SiOinf2inf coated CoFeinf2infOinf4inf nanopa cNOV a 683-6900 v4413 aOleic acid capped CoFe2O4 nanoparticles which exhibit a high coercivity of ∼9.47 kOe at room temperature were coated with a robust coating of SiO2. We have used chemical synthesis method to obtain SiO2 coated CoFe2O4 nanoparticles with different weight percentages of CoFe2O4 in SiO2 (1.5, 3.1 and 4.8 wt.%). The morphological investigation of the coated nanoparticles by transmission electron microscopy shows that the particles are spherical with average size ∼160 nm. Infrared spectroscopy reveals that oleic acid capping on the surface of CoFe2O4 nanoparticles is retained after silica coating process. The complete coating of SiO2 on CoFe2O4 nanoparticles is confirmed by X-ray photoelectron spectroscopy as there is no signature of cobalt or iron ions on the surface. Magnetic measurements show that coercivity of SiO2 coated CoFe2O4 particles remains more or less unaffected as in CoFe2O4 nanoparticles at room temperature. In addition, the temperature dependent magnetic measurements show that at 5 K the CoFe2O4 and SiO2 coated 1.5 wt.% CoFe2O4 samples exhibit a very high value of coercivity (∼20 kOe) which is more than twice as compared to room temperature coercivity value (∼9.47 kOe). We conclude that silica coating in our study does not significantly affect the coercivity of CoFe2O4 nanoparticles.10aCoatings10acoercive force10aHigh Resolution Transmission Elctron Microscopy10ainfrared spectroscopy10aMagnetic materials1 aLimaye, M.V.1 aSingh, S.B.1 aDas, R.1 aPoddar, P.1 aAbyaneh, M., K.1 aKulkarni, S.K. uhttps://library.ncl.res.in/content/magnetic-studies-sio2-coated-cofe2o4-nanoparticles