Berrin Duran - Academia.edu (original) (raw)

Papers by Berrin Duran

Research paper thumbnail of Arylamino Substituted Mercaptoimidazole Derivatives as New Corrosion Inhibitors for Carbon Steel in Acidic Media: Experimental and Computational Study

Journal of Electrochemical Science and Technology

Two arylamino substituted mercaptoimidazole derivatives namely 4,5-dimethyl-1-(phenylamino)-1H-im... more Two arylamino substituted mercaptoimidazole derivatives namely 4,5-dimethyl-1-(phenylamino)-1H-imidazole-2(3H)-thione (I1) and 4,5-dimethyl-1-((p-chlorophenyl)amino)-1H-imidazole-2(3H)-thione (I2) were synthesized and investigated as corrosion inhibitors for carbon steel in 0.5 M HCl solution by means of electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, ATR-FTIR spectroscopy and SEM. The results showed that the investigated mercaptoimidazole derivatives act as mixed type inhibitors and inhibition efficiency follows the I2>I1 order. Adsorption of inhibitors on metal surface was found to obey the Langmuir adsorption isotherm. Thermodynamic parameters revealed that adsorption of the inhibitors has both physisorption and chemisorption adsorption mechanism. Electrochemical test results were supported by quantum chemical parameters obtained from DFT calculations.

Research paper thumbnail of Investigation of Supporting Electrolyte Effect on Supercapacitor Properties of Poly(Carbazole) Films

Journal of Electrochemical Science and Technology

In this study poly(carbazole) films deposited on stainless steel have been investigated as electr... more In this study poly(carbazole) films deposited on stainless steel have been investigated as electrode material for supercapacitor applications. Poly(carbazole) films were electrodeposited using cyclic voltammetry in presence of lithium, sodium and tetrabutylammonium perchlorate salts. Poly(carbazole) films doped with perchlorate anions having different counter cations were characterized by SEM, ATR-FTIR and solid state conductivity measurements. Capacitive behaviours of PCz coated steel electrodes were tested by cyclic voltammetry, charge-discharge analysis and electrochemical impedance spectroscopy. It was found that counter cation of the dopant is significantly effective on the capacitive performance on the obtained PCz films and the PCz film synthesized from lithium perchlorate has the better capacitive performance than the poly(carbazole)s synthesized from sodium perchlorate and tetrabutylammonium perchlorate salts.

Research paper thumbnail of Corrosion protection of stainless steel by poly(carbazole-co-pyrrole) films deposited on TiO2 sol gel film

Polymer-Plastics Technology and Engineering, 2017

Research paper thumbnail of Inhibition of steel corrosion by potentiodynamic deposition of poly(N-methyl carbazole)

Journal of Adhesion Science and Technology, 2016

Research paper thumbnail of Influence of electrochemically prepared poly(pyrrole-co-N-methyl pyrrole) and poly(pyrrole)/poly(N-methyl pyrrole) composites on corrosion behavior of copper in acidic medium

Progress in Organic Coatings, 2013

ABSTRACT Poly(pyrrole-co-N-methyl pyrrole) copolymer and poly(pyrrole)/poly(N-methyl pyrrole) bil... more ABSTRACT Poly(pyrrole-co-N-methyl pyrrole) copolymer and poly(pyrrole)/poly(N-methyl pyrrole) bilayer composites were electrochemically synthesized on copper by cyclic voltammetry from aqueous solution of 0.3 M oxalic acid and 0.1 M monomer. Synthesis of copolymers were performed with different monomer feed ratios (pyrrole:N-methyl pyrrole, 8:2, 6:4, 5:5, 4:6 and 2:8) and in order to determine the copolymer, which has the best corrosion performance, anodic polarization was applied to copolymer coated samples. It was found that the performance of coatings was strongly dependent to the monomer feed ratio and the copolymer synthesized with 8:2 concentration ratio showed the most protective property compared to others. Bilayer of poly(pyrrole)/poly(N-methyl pyrrole) was also synthesized to compare the anticorrosive properties. Polymer films were characterized by ATR-FTIR spectroscopy and SEM techniques. Corrosion behavior of polymer composites was investigated in 0.1 M H2SO4 solution by anodic polarization and electrochemical impedance spectroscopy. Different approaches such as phase angle at high frequency and areas under Bode plots were used to evaluate corrosion performances of the coatings. Copolymer and bilayer coatings were found to have higher protection effect than single polypyrrole coatings. Moreover, bilayer coating exhibited better protection efficiency than copolymer coating against corrosion of copper when the obtained results were compared.

Research paper thumbnail of Electrochemical synthesis and characterization of poly( m-phenylenediamine) films on copper for corrosion protection

Progress in Organic Coatings - PROG ORG COATING

Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammet... more Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammetry in near-neutral aqueous sodium oxalate medium. Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy, scanning electron microscopy and atomic force microscopy were utilized to characterize the obtained PMPD films. Corrosion performances of uncoated and PMPD coated copper electrodes were investigated in 0.1M H2SO4 by open circuit potential–time (Eocp–t) curves, anodic polarization and electrochemical impedance spectroscopy techniques. Corrosion test results demonstrate that the PMPD coating appears to enhance protection of copper for considerable immersion periods. The percent protection efficiency value (E%) was found to be 80% even after 168h immersion time in corrosive test solution.

Research paper thumbnail of Poly(N-methyl aniline) thin films on copper: Synthesis, characterization and corrosion protection

Thin Solid Films, 2011

Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerizati... more Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerization of N-methyl aniline in aqueous oxalic acid solution by using cyclic voltammetry. The optimum electrodeposition conditions (e.g. upper potential limit, scan rate and cycle number) were determined in order to obtain PNMA coatings to have the best corrosion performance. PNMA coatings were characterized by cyclic voltammetry, Fourier Transform Infrared-Attenuated Total Reflectance spectroscopy and scanning electron microscopy. Redox parameters found after electrochemical tests indicate a thin film character and diffusion controlled electroactive behavior of PNMA. Corrosion test results revealed that PNMA coating appears to enhance protection of copper in 0.1 M H 2 SO 4 solution.

Research paper thumbnail of Anticorrosive properties of electrosynthesized poly(m-aminophenol) on copper from aqueous phenylphosphonic acid solution

Progress in Organic Coatings, 2009

Electropolymerization of m-aminophenol (MAP) on copper from aqueous phenylphosphonic acid (PPA) m... more Electropolymerization of m-aminophenol (MAP) on copper from aqueous phenylphosphonic acid (PPA) medium was achieved using cyclic voltammetry by applying three different scan rates namely 10mVs−1, 50mVs−1 and 100mVs−1. Characterization of obtained poly(m-aminophenol) (PMAP) films were done by FTIR, SEM and AFM methods. FTIR data reveal the presence of COC linkage in the polymer and suggest that monomer polymerized through –OH

Research paper thumbnail of Cyclic Voltammetric Synthesis of Poly( N -methyl pyrrole) on Copper and Effects of Polymerization Parameters on Corrosion Performance

Industrial & Engineering Chemistry Research, 2012

ABSTRACT

Research paper thumbnail of Electropolymerization, characterization and corrosion performance of poly(N-ethylaniline) on copper

Electrochimica Acta, 2009

Poly(N-ethylaniline) (PNEA) coatings were grown by cyclic voltammetry technique on copper from 0.... more Poly(N-ethylaniline) (PNEA) coatings were grown by cyclic voltammetry technique on copper from 0.1 M N-ethylaniline (NEA) in 0.3 M oxalic acid solution. The optimum conditions (e.g. upper potential limit, scan rate and cycle number) effect on corrosion performance of synthesized PNEA films were determined in order to obtain best protection results against corrosion. The electrodeposited coatings were characterized by cyclic voltammetry (CV), Fourier Transform Infrared-Attenuated Total Reflectance (FTIR-ATR) spectroscopy and scanning electron microscopy (SEM). Redox parameters were found after electrochemical tests and results of stability tests of these films impart an electroactive behavior that is composed of both diffusion control and thin film behavior. In addition, corrosion performance of PNEA coatings were investigated in 0.1 M H 2 SO 4 by Tafel extrapolation and electrochemical impedance spectroscopy (EIS) techniques.

Research paper thumbnail of Experimental and theoretical studies on protective properties of poly(pyrrole-co-N-methyl pyrrole) coatings on copper in chloride media

Corrosion Science, 2013

ABSTRACT The corrosion inhibition behaviour of poly(pyrrole-co-N-methyl pyrrole) films synthesize... more ABSTRACT The corrosion inhibition behaviour of poly(pyrrole-co-N-methyl pyrrole) films synthesized from oxalic acid solutions containing different ratios of monomers (Py:NMPy 8:2, 6:4, 5:5, 4:6, 2:8) has been examined. For this aim, Eocp–time curves, anodic polarization and EIS techniques were used. Synthesized copolymer films exhibited significant protection efficiency against corrosion of copper in 3.5% (w/v) NaCl and 8:2 ratios of monomers gave the most protective copolymer coating. Quantum chemical approach was utilized in order to correlate corrosion inhibition performance of all copolymers. Experimental protection efficiencies are supported by density functional theory (DFT) calculations.

Research paper thumbnail of Poly (N-methyl aniline) thin films on copper: Synthesis, characterization and corrosion protection

Thin Solid Films, 2011

Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerizati... more Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerization of N-methyl aniline in aqueous oxalic acid solution by using cyclic voltammetry. The optimum electrodeposition conditions (e.g. upper potential limit, scan rate and cycle number) were determined in order to obtain PNMA coatings to have the best corrosion performance. PNMA coatings were characterized by cyclic voltammetry, Fourier Transform Infrared-Attenuated Total Reflectance spectroscopy and scanning electron microscopy. Redox parameters found after electrochemical tests indicate a thin film character and diffusion controlled electroactive behavior of PNMA. Corrosion test results revealed that PNMA coating appears to enhance protection of copper in 0.1 M H 2 SO 4 solution.

Research paper thumbnail of Role of supporting electrolyte on the corrosion performance of poly(carbazole) films deposited on stainless steel

Corrosion Science, 2013

ABSTRACT

Research paper thumbnail of An experimental and theoretical investigation on adsorption properties of some diphenolic Schiff bases as corrosion inhibitors at acidic solution/mild steel interface

Arabian Journal of Chemistry, 2014

Research paper thumbnail of Schiff bases as corrosion inhibitor for aluminium in HCl solution

... 1 Schiff bases as corrosion inhibitor for aluminium in HCl solution Serpil Şafaka, Berrin Du... more ... 1 Schiff bases as corrosion inhibitor for aluminium in HCl solution Serpil Şafaka, Berrin Durana,*, Aysel Yurta, Gülşen Türkoğlub aEskişehir Osmangazi University, Faculty of Science and Letters, Department of Chemistry, 26480 ... [32] R. Solmaz, E. Altunbaş, G ...

Research paper thumbnail of Electropolymerization of m-aminophenol on mild steel and its corrosion protection effect

Progress in Organic Coatings, 2007

Poly-m-aminophenol (PMAP) films were synthesized using cyclic voltammetric (CV), chronoamperometr... more Poly-m-aminophenol (PMAP) films were synthesized using cyclic voltammetric (CV), chronoamperometric (CA) and chronopotentiometric (CP) methods in basic hydro-alcoholic medium on mild steel (MS). The structure and properties of these films were characterized by FTIR, UV–vis and scanning electron microscopy (SEM). SEM microphotographs reveal that the surface of MS was coated with PMAP films using CV, CP and CA methods. Some

Research paper thumbnail of Effect of the molecular weight and structure of some novel water-soluble triblock copolymers on the electrochemical behaviour of mild steel

Materials Chemistry and Physics, 2007

The inhibitive performance of novel synthesised water-soluble triblock copolymers – 2-(diethylami... more The inhibitive performance of novel synthesised water-soluble triblock copolymers – 2-(diethylamino)ethyl methacrylate-block-2-(dimethylamino)ethyl methacrylate-block-2-(N-morpholino )ethyl methacrylate [PDEA-PDMA-PMEMA] and 2-(diisopropylamino)ethyl methacrylate-...

Research paper thumbnail of A comparative study on protective properties of electrosynthesized poly(pyrrole)/poly(N-methylpyrrole), poly(pyrrole)/poly(N-phenylpyrrole), poly(pyrrole)/poly(N-methoxyphenylpyrrole) composite coatings

Journal of Coatings Technology and Research, 2013

ABSTRACT In this study, three sets of different bilayered composite coatings of pyrrole and N-sub... more ABSTRACT In this study, three sets of different bilayered composite coatings of pyrrole and N-substituted pyrroles were synthesized by a layer-by-layer approach on copper surface and corrosion performances of the synthesized materials were compared. Electrodepositions of poly(N-methylpyrrole), poly(N-phenylpyrrole), and poly(N-methoxyphenylpyrrole) were performed in nonaqueous medium on a poly(pryrrole)-coated copper surface using cyclic voltammetry. The morphologies of the resulting bilayered composite coatings of poly(pyrrole)/poly(N-methylpyrrole), poly(pyrrole)/poly(N-phenylpyrrole), and poly(pyrrole)/poly(N-methoxyphenylpyrrole) were investigated by scanning electron microscopy. Stabilities of a doping-dedoping process of the composites were determined from the cyclic voltammetric study of the bilayer-coated electrodes in a monomer-free solution. Corrosion performances of the bilayer composite-coated and uncoated copper electrodes were investigated in 0.1 M H2SO4 solution using open circuit potential–time (E ocp–t) curves, anodic polarization, and electrochemical impedance spectroscopy. All the investigated bilayered coatings gave significant enhancement in the corrosion resistance of copper, compared to the single poly(pyrrole) coating. Stability and corrosion tests revealed that the composite material poly(pyrrole)/poly(N-methoxyphenylpyrrole) exhibited higher electrochemical stability and corrosion resistant behavior than the other bilayered composite coatings.

Research paper thumbnail of Electrochemical synthesis and characterization of poly( m-phenylenediamine) films on copper for corrosion protection

Progress in Organic Coatings, 2000

Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammet... more Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammetry in near-neutral aqueous sodium oxalate medium. Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy, scanning electron microscopy and atomic force microscopy were utilized to characterize the obtained PMPD films. Corrosion performances of uncoated and PMPD coated copper electrodes were investigated in 0.1M H2SO4 by open circuit potential–time (Eocp–t) curves, anodic polarization

Research paper thumbnail of Arylamino Substituted Mercaptoimidazole Derivatives as New Corrosion Inhibitors for Carbon Steel in Acidic Media: Experimental and Computational Study

Journal of Electrochemical Science and Technology

Two arylamino substituted mercaptoimidazole derivatives namely 4,5-dimethyl-1-(phenylamino)-1H-im... more Two arylamino substituted mercaptoimidazole derivatives namely 4,5-dimethyl-1-(phenylamino)-1H-imidazole-2(3H)-thione (I1) and 4,5-dimethyl-1-((p-chlorophenyl)amino)-1H-imidazole-2(3H)-thione (I2) were synthesized and investigated as corrosion inhibitors for carbon steel in 0.5 M HCl solution by means of electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, ATR-FTIR spectroscopy and SEM. The results showed that the investigated mercaptoimidazole derivatives act as mixed type inhibitors and inhibition efficiency follows the I2>I1 order. Adsorption of inhibitors on metal surface was found to obey the Langmuir adsorption isotherm. Thermodynamic parameters revealed that adsorption of the inhibitors has both physisorption and chemisorption adsorption mechanism. Electrochemical test results were supported by quantum chemical parameters obtained from DFT calculations.

Research paper thumbnail of Investigation of Supporting Electrolyte Effect on Supercapacitor Properties of Poly(Carbazole) Films

Journal of Electrochemical Science and Technology

In this study poly(carbazole) films deposited on stainless steel have been investigated as electr... more In this study poly(carbazole) films deposited on stainless steel have been investigated as electrode material for supercapacitor applications. Poly(carbazole) films were electrodeposited using cyclic voltammetry in presence of lithium, sodium and tetrabutylammonium perchlorate salts. Poly(carbazole) films doped with perchlorate anions having different counter cations were characterized by SEM, ATR-FTIR and solid state conductivity measurements. Capacitive behaviours of PCz coated steel electrodes were tested by cyclic voltammetry, charge-discharge analysis and electrochemical impedance spectroscopy. It was found that counter cation of the dopant is significantly effective on the capacitive performance on the obtained PCz films and the PCz film synthesized from lithium perchlorate has the better capacitive performance than the poly(carbazole)s synthesized from sodium perchlorate and tetrabutylammonium perchlorate salts.

Research paper thumbnail of Corrosion protection of stainless steel by poly(carbazole-co-pyrrole) films deposited on TiO2 sol gel film

Polymer-Plastics Technology and Engineering, 2017

Research paper thumbnail of Inhibition of steel corrosion by potentiodynamic deposition of poly(N-methyl carbazole)

Journal of Adhesion Science and Technology, 2016

Research paper thumbnail of Influence of electrochemically prepared poly(pyrrole-co-N-methyl pyrrole) and poly(pyrrole)/poly(N-methyl pyrrole) composites on corrosion behavior of copper in acidic medium

Progress in Organic Coatings, 2013

ABSTRACT Poly(pyrrole-co-N-methyl pyrrole) copolymer and poly(pyrrole)/poly(N-methyl pyrrole) bil... more ABSTRACT Poly(pyrrole-co-N-methyl pyrrole) copolymer and poly(pyrrole)/poly(N-methyl pyrrole) bilayer composites were electrochemically synthesized on copper by cyclic voltammetry from aqueous solution of 0.3 M oxalic acid and 0.1 M monomer. Synthesis of copolymers were performed with different monomer feed ratios (pyrrole:N-methyl pyrrole, 8:2, 6:4, 5:5, 4:6 and 2:8) and in order to determine the copolymer, which has the best corrosion performance, anodic polarization was applied to copolymer coated samples. It was found that the performance of coatings was strongly dependent to the monomer feed ratio and the copolymer synthesized with 8:2 concentration ratio showed the most protective property compared to others. Bilayer of poly(pyrrole)/poly(N-methyl pyrrole) was also synthesized to compare the anticorrosive properties. Polymer films were characterized by ATR-FTIR spectroscopy and SEM techniques. Corrosion behavior of polymer composites was investigated in 0.1 M H2SO4 solution by anodic polarization and electrochemical impedance spectroscopy. Different approaches such as phase angle at high frequency and areas under Bode plots were used to evaluate corrosion performances of the coatings. Copolymer and bilayer coatings were found to have higher protection effect than single polypyrrole coatings. Moreover, bilayer coating exhibited better protection efficiency than copolymer coating against corrosion of copper when the obtained results were compared.

Research paper thumbnail of Electrochemical synthesis and characterization of poly( m-phenylenediamine) films on copper for corrosion protection

Progress in Organic Coatings - PROG ORG COATING

Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammet... more Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammetry in near-neutral aqueous sodium oxalate medium. Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy, scanning electron microscopy and atomic force microscopy were utilized to characterize the obtained PMPD films. Corrosion performances of uncoated and PMPD coated copper electrodes were investigated in 0.1M H2SO4 by open circuit potential–time (Eocp–t) curves, anodic polarization and electrochemical impedance spectroscopy techniques. Corrosion test results demonstrate that the PMPD coating appears to enhance protection of copper for considerable immersion periods. The percent protection efficiency value (E%) was found to be 80% even after 168h immersion time in corrosive test solution.

Research paper thumbnail of Poly(N-methyl aniline) thin films on copper: Synthesis, characterization and corrosion protection

Thin Solid Films, 2011

Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerizati... more Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerization of N-methyl aniline in aqueous oxalic acid solution by using cyclic voltammetry. The optimum electrodeposition conditions (e.g. upper potential limit, scan rate and cycle number) were determined in order to obtain PNMA coatings to have the best corrosion performance. PNMA coatings were characterized by cyclic voltammetry, Fourier Transform Infrared-Attenuated Total Reflectance spectroscopy and scanning electron microscopy. Redox parameters found after electrochemical tests indicate a thin film character and diffusion controlled electroactive behavior of PNMA. Corrosion test results revealed that PNMA coating appears to enhance protection of copper in 0.1 M H 2 SO 4 solution.

Research paper thumbnail of Anticorrosive properties of electrosynthesized poly(m-aminophenol) on copper from aqueous phenylphosphonic acid solution

Progress in Organic Coatings, 2009

Electropolymerization of m-aminophenol (MAP) on copper from aqueous phenylphosphonic acid (PPA) m... more Electropolymerization of m-aminophenol (MAP) on copper from aqueous phenylphosphonic acid (PPA) medium was achieved using cyclic voltammetry by applying three different scan rates namely 10mVs−1, 50mVs−1 and 100mVs−1. Characterization of obtained poly(m-aminophenol) (PMAP) films were done by FTIR, SEM and AFM methods. FTIR data reveal the presence of COC linkage in the polymer and suggest that monomer polymerized through –OH

Research paper thumbnail of Cyclic Voltammetric Synthesis of Poly( N -methyl pyrrole) on Copper and Effects of Polymerization Parameters on Corrosion Performance

Industrial & Engineering Chemistry Research, 2012

ABSTRACT

Research paper thumbnail of Electropolymerization, characterization and corrosion performance of poly(N-ethylaniline) on copper

Electrochimica Acta, 2009

Poly(N-ethylaniline) (PNEA) coatings were grown by cyclic voltammetry technique on copper from 0.... more Poly(N-ethylaniline) (PNEA) coatings were grown by cyclic voltammetry technique on copper from 0.1 M N-ethylaniline (NEA) in 0.3 M oxalic acid solution. The optimum conditions (e.g. upper potential limit, scan rate and cycle number) effect on corrosion performance of synthesized PNEA films were determined in order to obtain best protection results against corrosion. The electrodeposited coatings were characterized by cyclic voltammetry (CV), Fourier Transform Infrared-Attenuated Total Reflectance (FTIR-ATR) spectroscopy and scanning electron microscopy (SEM). Redox parameters were found after electrochemical tests and results of stability tests of these films impart an electroactive behavior that is composed of both diffusion control and thin film behavior. In addition, corrosion performance of PNEA coatings were investigated in 0.1 M H 2 SO 4 by Tafel extrapolation and electrochemical impedance spectroscopy (EIS) techniques.

Research paper thumbnail of Experimental and theoretical studies on protective properties of poly(pyrrole-co-N-methyl pyrrole) coatings on copper in chloride media

Corrosion Science, 2013

ABSTRACT The corrosion inhibition behaviour of poly(pyrrole-co-N-methyl pyrrole) films synthesize... more ABSTRACT The corrosion inhibition behaviour of poly(pyrrole-co-N-methyl pyrrole) films synthesized from oxalic acid solutions containing different ratios of monomers (Py:NMPy 8:2, 6:4, 5:5, 4:6, 2:8) has been examined. For this aim, Eocp–time curves, anodic polarization and EIS techniques were used. Synthesized copolymer films exhibited significant protection efficiency against corrosion of copper in 3.5% (w/v) NaCl and 8:2 ratios of monomers gave the most protective copolymer coating. Quantum chemical approach was utilized in order to correlate corrosion inhibition performance of all copolymers. Experimental protection efficiencies are supported by density functional theory (DFT) calculations.

Research paper thumbnail of Poly (N-methyl aniline) thin films on copper: Synthesis, characterization and corrosion protection

Thin Solid Films, 2011

Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerizati... more Poly(N-methyl aniline) (PNMA) coatings were synthesized on copper by electrochemical polymerization of N-methyl aniline in aqueous oxalic acid solution by using cyclic voltammetry. The optimum electrodeposition conditions (e.g. upper potential limit, scan rate and cycle number) were determined in order to obtain PNMA coatings to have the best corrosion performance. PNMA coatings were characterized by cyclic voltammetry, Fourier Transform Infrared-Attenuated Total Reflectance spectroscopy and scanning electron microscopy. Redox parameters found after electrochemical tests indicate a thin film character and diffusion controlled electroactive behavior of PNMA. Corrosion test results revealed that PNMA coating appears to enhance protection of copper in 0.1 M H 2 SO 4 solution.

Research paper thumbnail of Role of supporting electrolyte on the corrosion performance of poly(carbazole) films deposited on stainless steel

Corrosion Science, 2013

ABSTRACT

Research paper thumbnail of An experimental and theoretical investigation on adsorption properties of some diphenolic Schiff bases as corrosion inhibitors at acidic solution/mild steel interface

Arabian Journal of Chemistry, 2014

Research paper thumbnail of Schiff bases as corrosion inhibitor for aluminium in HCl solution

... 1 Schiff bases as corrosion inhibitor for aluminium in HCl solution Serpil Şafaka, Berrin Du... more ... 1 Schiff bases as corrosion inhibitor for aluminium in HCl solution Serpil Şafaka, Berrin Durana,*, Aysel Yurta, Gülşen Türkoğlub aEskişehir Osmangazi University, Faculty of Science and Letters, Department of Chemistry, 26480 ... [32] R. Solmaz, E. Altunbaş, G ...

Research paper thumbnail of Electropolymerization of m-aminophenol on mild steel and its corrosion protection effect

Progress in Organic Coatings, 2007

Poly-m-aminophenol (PMAP) films were synthesized using cyclic voltammetric (CV), chronoamperometr... more Poly-m-aminophenol (PMAP) films were synthesized using cyclic voltammetric (CV), chronoamperometric (CA) and chronopotentiometric (CP) methods in basic hydro-alcoholic medium on mild steel (MS). The structure and properties of these films were characterized by FTIR, UV–vis and scanning electron microscopy (SEM). SEM microphotographs reveal that the surface of MS was coated with PMAP films using CV, CP and CA methods. Some

Research paper thumbnail of Effect of the molecular weight and structure of some novel water-soluble triblock copolymers on the electrochemical behaviour of mild steel

Materials Chemistry and Physics, 2007

The inhibitive performance of novel synthesised water-soluble triblock copolymers – 2-(diethylami... more The inhibitive performance of novel synthesised water-soluble triblock copolymers – 2-(diethylamino)ethyl methacrylate-block-2-(dimethylamino)ethyl methacrylate-block-2-(N-morpholino )ethyl methacrylate [PDEA-PDMA-PMEMA] and 2-(diisopropylamino)ethyl methacrylate-...

Research paper thumbnail of A comparative study on protective properties of electrosynthesized poly(pyrrole)/poly(N-methylpyrrole), poly(pyrrole)/poly(N-phenylpyrrole), poly(pyrrole)/poly(N-methoxyphenylpyrrole) composite coatings

Journal of Coatings Technology and Research, 2013

ABSTRACT In this study, three sets of different bilayered composite coatings of pyrrole and N-sub... more ABSTRACT In this study, three sets of different bilayered composite coatings of pyrrole and N-substituted pyrroles were synthesized by a layer-by-layer approach on copper surface and corrosion performances of the synthesized materials were compared. Electrodepositions of poly(N-methylpyrrole), poly(N-phenylpyrrole), and poly(N-methoxyphenylpyrrole) were performed in nonaqueous medium on a poly(pryrrole)-coated copper surface using cyclic voltammetry. The morphologies of the resulting bilayered composite coatings of poly(pyrrole)/poly(N-methylpyrrole), poly(pyrrole)/poly(N-phenylpyrrole), and poly(pyrrole)/poly(N-methoxyphenylpyrrole) were investigated by scanning electron microscopy. Stabilities of a doping-dedoping process of the composites were determined from the cyclic voltammetric study of the bilayer-coated electrodes in a monomer-free solution. Corrosion performances of the bilayer composite-coated and uncoated copper electrodes were investigated in 0.1 M H2SO4 solution using open circuit potential–time (E ocp–t) curves, anodic polarization, and electrochemical impedance spectroscopy. All the investigated bilayered coatings gave significant enhancement in the corrosion resistance of copper, compared to the single poly(pyrrole) coating. Stability and corrosion tests revealed that the composite material poly(pyrrole)/poly(N-methoxyphenylpyrrole) exhibited higher electrochemical stability and corrosion resistant behavior than the other bilayered composite coatings.

Research paper thumbnail of Electrochemical synthesis and characterization of poly( m-phenylenediamine) films on copper for corrosion protection

Progress in Organic Coatings, 2000

Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammet... more Poly(m-phenylenediamine) (PMPD) films were electrosynthesized on copper by using cyclic voltammetry in near-neutral aqueous sodium oxalate medium. Attenuated Total Reflectance-Fourier Transform Infrared spectroscopy, scanning electron microscopy and atomic force microscopy were utilized to characterize the obtained PMPD films. Corrosion performances of uncoated and PMPD coated copper electrodes were investigated in 0.1M H2SO4 by open circuit potential–time (Eocp–t) curves, anodic polarization