Inhibition of pyrite corrosion and photocorrosion by MEKF-R modified carbazoles

Ustamehmetoğlu, Belkıs; Sezer, Esma; Kızılcan, Nilgün; Yazıcı, Pelin; Tayyar, Şebnem; Saraç, A. Sezai̊

doi:10.1016/j.porgcoat.2012.10.003

Cited by 11 publications

(3 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is mentioned that carbazole modified ketonic resins offered better fluorescence and solubility properties compared to cyclohexanone-formaldehyde ketonic resin. Ustamehmetoǧlu et al [14], have studied the corrosion inhibition and photoactivity effects of different types of ketonic coating materials, such as, polyvinylcarbazole, polyvinylcarbazole methyl ethyl ketone formaldehyde, carbazole methyl ethyl ketone formaldehyde, and polycarbazole methyl ethyl ketone formaldehyde resin. Among the studied materials, carbazole modified methyl ethyl ketone formaldehyde resin offered better performance towards corrosion inhibition.…”

Section: Previous Studies In Regards To Using Ketone and Aldehyde Monmentioning

confidence: 99%

Preparation and characterization of ketonic polymer for coating applications

Uttaravalli

Dinda

Kalidindi

et al. 2016

Progress in Organic Coatings

View full text Add to dashboard Cite

Section: Previous Studies In Regards To Using Ketone and Aldehyde Monmentioning

confidence: 99%

Preparation and characterization of ketonic polymer for coating applications

Uttaravalli

Dinda

Kalidindi

et al. 2016

Progress in Organic Coatings

View full text Add to dashboard Cite

“…PNVCz, Cz-modified methyl ethyl ketone formaldehyde resin (MEKFR) and PNVCz-MEKFR copolymer were obtained on pyrite surface and then their photoactivity and inhibition on the corrosion and photo corrosion of pyrite were investigated (Ustamehmeto glu et al, 2013). The conductivity, solubility and thermal behaviour of the copolymers of polypyrrole and ketonic resin were investigated (Kızılcan and Ustamehmeto glu, 2005).…”

Section: Introductionmentioning

confidence: 99%

Electrochemical synthesis and characterization of copolymers of N-vinyl carbazole and methyl ethyl ketone formaldehyde resin

Ustamehmetoğlu

Köken

Kızılcan

et al. 2020

PRT

Self Cite

View full text Add to dashboard Cite

Purpose The purpose of this paper is to produce non-conductive copolymers of N-vinyl carbazole (NVCz) and methyl ethyl ketone formaldehyde resin (MEKFR) by the electroinduced Ce (IV) polymerization method and the electrochemical oxidization of the formed copolymer to produce their conductive green form. The non-conductive and conductive copolymers were characterized by using Fourier transform infrared, solid-state conductivity and spectroelectrochemical, chronoamperometric, cyclovoltammetric and electrochemical impedance spectroscopic measurements. Design/methodology/approach The chronoamperometric electropolymerization of white, insulator form of the copolymer of NVCz and MEKFR (copolymer 1) on to Pt electrode was carried out and the green coloured film of the MEKFR-ox-NVCz copolymer (copolymer 11) was produced in the doped and conductive form. All reactions were performed in dichloromethane containing 0.1 M BU4NClO4. Copolymer 11 films obtained on the surface of the working electrode were removed and washed in acetonitrile and dried at room temperature before characterization. The results were compared with the copolymer obtained by electrochemical oxidation of MEKF-R and NVCz (copolymer 2). Findings The insulating copolymer of NVCz and MEKFR (copolymer 1) was produced by the electroinduced Ce (IV) polymerization method and converted into the conductive form electrochemically on the surface of the Pt electrode (copolymer 11). The polymers were characterized by electrochemical, spectrophotometric and conductivity measurements. The ionization potentials, optical band gap, peak potentials Ep, doping degree and specific capacitance of the copolymer 11 were obtained. The conductivity of the copolymer 11 is lower than the PNVCz and higher than the copolymer obtained by electrochemical oxidation of MEKF-R and NVCz (copolymer 2). The copolymer 11 has a lower onset potential than PNVCz and the copolymer 1 and slightly higher band gap than PNVCz. The capacitive behaviours of the copolymer 11 were very close to PNVCz. Research limitations/implications This study focuses on obtaining a green and conductive form of the copolymer of NVCz and MEKFR with the electrochemical method by using a white and insulator form of the same copolymer. Practical implications This work provides technical information for the synthesis of conducting copolymer of NVCz and MEKFR. Social implications These copolymers may be in the field of PNVCz applications such as photoconductivity and corrosion inhibition. Originality/value Electroinduced Ce (IV) MEKFR redox system was applied for the polymerization of NVCz monomer to produce the copolymer 1. The conductive copolymer 11 was synthesized through electrochemical oxidative coupling of the carbazole groups of the copolymer 1.

show abstract

“…The modifier compounds were phenols, bisphenols, melamine, p-toluenesulphonamide (Kızılcan et al, 1993;Kızılcan and Akar, 1996), salicylic acid, o-cresol, p-cresol, citric acid (Kızılcan and Akar, 1999), polydimethylsiloxane (Kızılcan and Akar, 2005), benzoin (Kızılcan, 1999), aniline, 4aminodiphenylamine, N-N=-diphenyl-1,4-phenylene diamine (Ateş and Kızılcan, 2011) and carbazole-9-carbonyl chloride (Kızılcan et al, 2011;Ustamehmetoglu et al, 2011). Ketonic resin can be used as a monomer for polypyrrole copolymers by oxidative polymerisation of Py with Ce (IV) in the presence of an appropriate ketonic resin (Kızılcan and Ustamehmetoglu, 2005;Ustamehmetoglu et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Novel phenylacetylene based ketonic resins

Kızılcan

Erson

2015

Pigment &Amp; Resin Technology

View full text Add to dashboard Cite

Purpose – This paper aims to report the synthesis of resins having fluorescence properties, with the help of phenylacetylene (PhAc) by one-step method of in situ modification of ketonic resin. Cyclohexanone-formaldehyde resin (CFR) and acetophenone formaldehyde resin (AFR) were in situ modified with PhAc, in presence of sodium hydroxide (NaOH) by condensation polymerisation. Design/methodology/approach – Ketone, formalin and phenylacetylene were mixed and then 20% aqueous NaOH solution was added to produce the phenylacethylene modified ketonic resin. The solubility, molecular weight and thermal properties of the products were investigated. Findings – These new PhAc-modified ketonic resins (PAc-CFR and PAc-AFR) have fluorescence properties. Research limitations/implications – This study focuses on obtaining a fluorescence resin using a cyclohexanone, acetophenone and PhAc monomer which is an insulator. Practical implications – This study provides technical information for the synthesis of fluorescence comonomers. The modified resins contain acetylene groups. A chemical redox or radical system can be used to polymerise these acetylene groups and resins with much higher molecular weight. The resins may also promote the adhesive strength of a coating and corrosion inhibition to metal surfaces of a coating. Social implications – The resins will be used for the preparation of AB- and ABA-type block copolymers. These block copolymers may exhibit different properties due to incorporation of monomer into the block copolymer structure. Originality/value – PAc-CFR and PAc-AFR have been synthesised in the presence of a basic catalyst. Higher solubility and fluorescence intensity of the modified ketonic resins may increase their applications in the field of electroactive polymers and open new areas. These comonomers have fluorescence property.

show abstract

Inhibition of pyrite corrosion and photocorrosion by MEKF-R modified carbazoles

Cited by 11 publications

References 37 publications

Preparation and characterization of ketonic polymer for coating applications

Preparation and characterization of ketonic polymer for coating applications

Electrochemical synthesis and characterization of copolymers of N-vinyl carbazole and methyl ethyl ketone formaldehyde resin

Novel phenylacetylene based ketonic resins

Contact Info

Product

Resources

About