Preparation and characterization of polyaniline in reversed micelles of decylphosphonic acid for active corrosion protection coatings

Perrin, F.X.; Phan, The-Anh; Nguyen, Dinh Lam

doi:10.1016/j.eurpolymj.2015.01.052

Cited by 18 publications

(8 citation statements)

References 70 publications

(90 reference statements)

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“…In the FT-IR spectra of the PANI samples, the characteristic peaks at 1685 and 1558 cm −1 are attributed to the vibrations of C═C in the quinoid and benzenoid rings, respectively. The typical peak at 1487 cm −1 is assigned to C–N stretching vibrations in the neighborhood of the quinoid ring [ 40 ]. The absorption at 1284 cm −1 is attributed to the C–N bonds associated with the benzenoid ring.…”

Section: Resultsmentioning

confidence: 99%

An Amazingly Simple, Fast and Green Synthesis Route to Polyaniline Nanofibers for Efficient Energy Storage

et al. 2020

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The major drawbacks of the conventional methods for preparing polyaniline (PANI) are the large consumptions of toxic chemicals and long process durations. This paper presents a remarkably simple and green route for the chemical oxidative synthesis of PANI nanofibers, utilizing sodium phytate as a novel and environmentally friendly plant derived dopant. The process shows a remarkable reduction in the synthesis time and usage of toxic chemicals with good dispersibility and exceedingly high conductivity up to 10 S cm−1 of the resulting PANI at the same time. A detailed characterization of the PANI samples has been made showing excellent relationships between their structure and properties. Particularly, the electrochemical properties of the synthesized PANI as electrode material for supercapacitors were analyzed. The PANI sample, synthesized at pre-optimized conditions, exhibited impressive supercapacitor performance having a high specific capacitance (Csp) (832.5 Fg−1 and 528 Fg−1 at 1 Ag−1 and 40 Ag−1, respectively) as calculated from galvanostatic charge/discharge (GCD) curves. A good rate capability with a capacitance retention of 67.6% of its initial value was observed. The quite low solution resistance (Rs) value of 281.0 × 10−3 Ohm and charge transfer resistance value (Rct) of 7.44 Ohm represents the excellence of the material. Further, a retention of 95.3% in coulombic efficiency after 1000 charge discharge cycles, without showing any significant degradation of the material, was also exhibited.

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Section: Resultsmentioning

confidence: 99%

An Amazingly Simple, Fast and Green Synthesis Route to Polyaniline Nanofibers for Efficient Energy Storage

et al. 2020

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“…Many organic acids have been studied for this purpose, such as tartaric acid [3], salicylic acid [4], mercapto carboxylic acid [5], toluene sulfonic acid [6], naphthalene sulfonic acid [7], camphor sulfonic acid [8,9], sulfonated dendron [10], decylphosphonic acid [11], dodecylbenzene sulfonic acid (DBSA) [12,13], sodium dodecyl sulfate (SDS) [4,14], and aniline-4-(3-(4(4nitrophenyl) (azo) feniloxipropil aminobenzen sulfonic acid [15].…”

Section: Introductionmentioning

confidence: 99%

“…A considerable number of studies that describe different conditions for preparing nanostructured 1D-polyaniline (1D-PANI) have increased the interest in determining the physicochemical reasons for the formation of this material [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Several reviews have been focused on establishing the conditions that generate these structures, which have numerous applications, such as the production of biosensors, energy storage, Bdigital nonvolatile memory field emission,^and Bflash welding gas separated membranes^ [1,2].…”

Section: Introductionmentioning

confidence: 99%

1D-polyaniline starting from self-assembled systems

Donescu¹,

Ghiurea²,

Spataru³

et al. 2015

Colloid Polym Sci

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The radical polymerization of aniline hydrochloride (ANIHCl) in the presence of ammonium persulfate was studied. 1D-Polyaniline (PANI) with fibrillar morphologies was obtained in the presence of anionic surfactants. The changes of the PANI-template structures in aqueous solution were studied using static fluorescence measurements. The dispersed PANI nanoparticles were characterized using dynamic light scattering, scanning electron microscopy (SEM), and Raman and Fourier transform infrared spectroscopies. The thermal analysis and the electrical conductivity of the dried samples were also performed. The fluorescence measurements indicated that nanocrystals of ANIHCl form in water complexes with the anionic surfactants at smaller concentrations than the critical micellar concentration. The same method revealed that other organic complexes with sulfonate groups do not induce an increase of the hydrophobic region due to short hydrocarbon tails. The SEM micrographs and Raman spectra revealed that the PANI nanofibers are compact and different compared to the nanoparticles prepared without surfactants.

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“…The high conductivity of graphene contributed to an increase in the PANI conductivity, which strengthened the anticorrosive behavior of the GPn. Furthermore, the two-dimensional graphene layers provide a physical barrier against the migration of corrosive species 21 – 25 , which can synergistically couple with a PANI barrier effect 26 – 28 . Lastly, the GPn coating allowed nondestructive, electrochemical monitoring of the metal-surface status.…”

Section: Introductionmentioning

confidence: 99%

A Solution-Processable, Nanostructured, and Conductive Graphene/Polyaniline Hybrid Coating for Metal-Corrosion Protection and Monitoring

Kim

Park

et al. 2017

Sci Rep

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A smart and effective anticorrosive coating consisting of alternating graphene and polyaniline (PANI) layers was developed using top-down solution processing. Graphite was exfoliated using sonication assisted by polyaniline to produce a nanostructured, conductive graphene/polyaniline hybrid (GPn) in large quantities (>0.5 L of 6 wt% solution in a single laboratory-scale process). The GPn was coated on copper and exhibited excellent anticorrosion protection efficiencies of 46.6% and 68.4% under electrochemical polarization in 1 M sulfuric acid and 3.5 wt% sodium chloride solutions, chosen as chemical and seawater models, respectively. Impedance measurements were performed in the two corrosive solutions, with the variation in charge transfer resistance (R ct) over time indicating that the GPn acted as an efficient physical and chemical barrier preventing corrosive species from reaching the copper surface. The GPn-coated copper was composed of many PANI-coated graphene planes stacked parallel to the copper surface. PANI exhibits redox-based conductivity, which was facilitated by the high conductivity of graphene. Additionally, the GPn surface was found to be hydrophobic. These properties combined effectively to protect the copper metal against corrosion. We expect that the GPn can be further applied for developing smart anticorrosive coating layers capable of monitoring the status of metals.

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Preparation and characterization of polyaniline in reversed micelles of decylphosphonic acid for active corrosion protection coatings

Cited by 18 publications

References 70 publications

An Amazingly Simple, Fast and Green Synthesis Route to Polyaniline Nanofibers for Efficient Energy Storage

An Amazingly Simple, Fast and Green Synthesis Route to Polyaniline Nanofibers for Efficient Energy Storage

1D-polyaniline starting from self-assembled systems

A Solution-Processable, Nanostructured, and Conductive Graphene/Polyaniline Hybrid Coating for Metal-Corrosion Protection and Monitoring

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