Synthesis and evaluating corrosion protection effects of emeraldine base PAni/clay nanocomposite as a barrier pigment in zinc-rich ethyl silicate primer

Akbarinezhad, E.; Ebrahimi, Mojtaba; Sharif, Farhad; Attar, M.M.; Faridi, H.R.

doi:10.1016/j.porgcoat.2010.09.016

Cited by 89 publications

(34 citation statements)

References 39 publications

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“…In addition to these outstanding properties, doped‐PANI plays an important role as an active ingredient in protecting steel against corrosion . This characteristic is mainly based on its anodic activity and physical barrier protection to corrosive media . The compromising between the organic conductive part, represented by PANI, and the inorganic aluminosilicate‐layered sheets of kaolinite generates nanocomposites with improved mechanical, thermal, electrical and optical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Many factors have a great effect on the properties of the nanocomposite such as kaolinite particle size, dopant type and concentration, the temperature of polymerization, aniline to oxidant molar ratio, uniformity of dispersion, and the structural bond between polymer and kaolinite . Kaolinite, PANI, and their nanocomposites can be used in supercapacitors , biosensors , dye and heavy metal adsorption , conductive fillers , optoelectronics, electromagnetic interference devices and corrosion protection .…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and characterization of kaolinite/polyaniline nanocomposites and investigating their anticorrosive performance in chlorinated rubber/alkyd coatings

et al. 2018

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Kaolinite/polyaniline nanocomposites (KPAns) were prepared by in situ chemical oxidative polymerization. The nanocomposites were synthesized with four different aniline to kaolinite weight percentage; 5, 10, 15, and 20% to produce KPAn5, KPAn10, KPAn15, and KPAn20, respectively. The structural, morphological and thermal properties of the nanocomposites were characterized using Fourier transform infrared, X‐ray diffraction, scanning electron microscope (SEM)–energy dispersive X‐ray analyzer, transmission electron microscope, and Thermogravimetric analysis. The results revealed a very slight increase in the d‐spacing of kaolinite XRD peaks. SEM images showed hexagonal platy sheets of kaolinite crystals that are indistinguishable in KPAn nanocomposites images, especially on using a high amount of polyaniline (PANI). The increase in the percentage of carbon and nitrogen elements in EDAX data proved the adsorption of PANI on the surface of kaolinite platelets. To investigate the anticorrosive performance of the synthesized nanocomposites, kaolinite and KPAn nanocomposites were loaded in various amounts (1, 5, and 9%) in a blend of chlorinated rubber/medium oil alkyd resin (CR/MA) to prepare different formulations that were applied and evaluated as protective coats on steel substrates. Visual corrosion test revealed that 5% KPAn‐loaded CR/MA coats exhibited the best protection against corrosion amongst other formulations as indicated by their lowest degree of rusting and blistering. Potentiodynamic polarization measurements confirmed the highest protection of 5% KPAn10‐loaded CR/MA coat as indicated by the quantitative corrosion rates obtained from Tafel extrapolation. POLYM. COMPOS., 40:2777–2789, 2019. © 2018 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of kaolinite/polyaniline nanocomposites and investigating their anticorrosive performance in chlorinated rubber/alkyd coatings

et al. 2018

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“…Polyaniline (PANI) is one of the most promising conductive polymers for technological applications due to its easy synthesis, high environmental stability, huge electrical conductivity, as well as a comparatively low cost [2,3]. PANI is synthesized for specific applications like organic electronics [3], circuit component (such as varistors [4], super capacitors [3,5]), electrochemical catalysis [5,6], corrosion protection [7,8] and sensors [9].…”

Section: Introductionmentioning

confidence: 99%

Artificial Neural Networks Study on Prediction of Dielectric Permittivity of Basalt/PANI Composites

Eyecioğlu¹,

Kılıç²,

Karabul³

et al. 2016

IJET

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Abstract-In the present study, the dielectric permittivity change of basalt (two type basalt; CM-1, KYZ-13) reinforced PANI composites were studied to determine the effects of PANI additivities (10.0, 25.0, 50.0 wt.%) at several frequencies from 100 Hz to 17.5 MHz by a dielectric spectroscopy method at the room temperature and artificial neural networks (ANNs) simulation. Also, the dielectric permittivity at 30.0 wt.% of PANI additivity was obtained by ANNs without experimental process. That process, a significant predictive instrument was produced which allows optimization of dielectric properties for numerous composites without substantial experimentation. It has been observed that PANI additivities decreased to dielectric constant of composites at low frequencies. Furthermore, the ANNs method have satisfactory accuracy for prediction of dielectric parameters.

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“…have been synthesized and utilized for the corrosion protection of metals and metal alloys. [52][53][54][55][56] The functional properties and specific morphology of these materials exercise an additional protection mechanism. For example, the platelet nature of flakes can result in the lengthening of the path for corrosive ions.…”

Section: Introductionmentioning

confidence: 99%

Tungstate and vanadate-doped polypyrrole/aluminum flake composite coatings for the corrosion protection of aluminum 2024-T3

2015

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Polypyrrole (PPy) doped with either tungstate or vanadate as counter anions was synthesized by chemical oxidative polymerization on the surface of aluminum (Al) flakes. This resulted in the deposition of PPy on the surface of the Al flakes leading to the formation of doped PPy/Al flake composite pigments. These composite pigments were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, energy dispersive spectroscopy, conductive-atomic force microscopy, four-point probe conductivity, and X-ray photoelectron spectroscopy. Furthermore, these composites were incorporated in an epoxy-amide binder system in order to formulate a primer for an aluminum 2024-T3 substrate. The coatings were exposed to the Prohesion test conditions and corrosion resistance properties were monitored by electrochemical impedance spectroscopy, DC polarization, galvanic coupling, and scanning electrochemical microscopy measurements. It was found that the doped PPy/Al flake coatings provided sacrificial protection to the underlying aluminum 2024-T3 substrate. Additionally, the release of dopants from PPy backbone resulted in the passivation in the defect areas improving the corrosion protection ability.

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Synthesis and evaluating corrosion protection effects of emeraldine base PAni/clay nanocomposite as a barrier pigment in zinc-rich ethyl silicate primer

Cited by 89 publications

References 39 publications

Synthesis and characterization of kaolinite/polyaniline nanocomposites and investigating their anticorrosive performance in chlorinated rubber/alkyd coatings

Synthesis and characterization of kaolinite/polyaniline nanocomposites and investigating their anticorrosive performance in chlorinated rubber/alkyd coatings

Artificial Neural Networks Study on Prediction of Dielectric Permittivity of Basalt/PANI Composites

Tungstate and vanadate-doped polypyrrole/aluminum flake composite coatings for the corrosion protection of aluminum 2024-T3

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