Enhancement of corrosion protection of mild steel by chitosan/ZnO nanoparticle composite membranes

John, Sam; Abraham, Jayanthi; Jose, Ajith James; Narayana, B.

doi:10.1016/j.porgcoat.2015.02.005

Cited by 112 publications

(41 citation statements)

References 34 publications

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“…Due to this, the integrity of the coating used as a protective system against corrosion is fundamental. One way to achieve this goal is to strengthen the structure of the protective film by using healing agents, crosslinking agents, and incorporation of corrosion inhibitors or inert particles that block the diffusion of aggressive anions and also improve the adhesion of the coating towards the substrate [1][2][3][4][5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Martı́nez–Gómez

Quinto-Hernandez

Flores-Garcia

et al. 2019

International Journal of Polymer Science

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In this study, the electrophoretic deposition of chitosan films doped with Nd 2 Ti 2 O 7 nanoparticles was carried out as corrosion protection systems for exposed materials in aqueous environments rich in chlorides. Completely crystalline Nd 2 Ti 2 O 7 nanoparticles with an average size of 100-200 nm were obtained. Electrophoretic deposition of chitosan films with Nd 2 Ti 2 O 7 nanoparticles was possible. With a working voltage of 5 V and 20 minutes of deposition, homogenous chitosan films with a thickness of 4 microns were obtained. According to the FT-IR (Fourier transform infrared spectroscopy), Raman, and XRD (X-ray diffraction) analyses, it was observed that the presence of the nanoparticles modified the properties of the chitosan films, that is, their crystallinity was increased and their moisture absorption capacity was reduced. These modifications caused a better performance against the corrosion of chitosan films deposited on 1018 carbon steel. Its electrochemical evaluation showed that the chitosan films perform as cathodic coatings by affecting the oxygen reduction reaction. This was possible due to the barrier effect of the Nd 2 Ti 2 O 7 nanoparticles, by blocking the effective area for the diffusion of the aggressive electrolyte species.

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Section: Introductionmentioning

confidence: 99%

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Martı́nez–Gómez

Quinto-Hernandez

Flores-Garcia

et al. 2019

International Journal of Polymer Science

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“…For instance, self‐healing chitosan‐based coatings doped with cerium nitrate were synthesized for corrosion protection of aluminum alloy 2024 . High corrosion resistance for mild steel was also reported when a nano‐ZnO containing chitosan layer was applied on substrates by sol–gel method . In addition, an electrochemically deposited chitosan coating enhanced the corrosion resistance of mild steel in 0.5 M H 2 SO 4 solution…”

Section: Introductionmentioning

confidence: 99%

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

Rabizadeh

Asl

2018

Materials & Corrosion

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In this research, the effects of chitosan on the corrosion behavior of mild steel in 0.1 M hydrochloric acid was investigated by different approaches. According to weight loss measurements, increasing the concentration of chitosan from 0.3 to 1.8 mM, significantly reduced the corrosion rate of mild steel, for example, from 95.5 ± 5 to 7.5 ± 5 mpy at 298 K. The thermodynamic calculations indicate an increase in the corrosion activation energy and the enthalpy of activation when 1.8 mM chitosan was added to the aggressive solution. The electrochemical polarization technique revealed a decrease in corrosion current density which is compatible with the observed increase in the charge transfer resistance measured by electrochemical impedance spectroscopy. The EDS spectra confirmed the adsorption of chitosan on mild steel. Analyzing the surface topography of the coupons by atomic force microscopy showed a remarkable decrease in the corrosion rate of the specimens in the presence of chitosan.

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“…Figure shows shift to lower angles in kaolinite diffraction peaks with increasing concentration of PANI in the nanocomposites. This may be due to the expansion produced by the included PANI chains within the kaolinite layers .…”

Section: Resultsmentioning

confidence: 99%

“…Corrosion of steel is one of the well‐known problems that cause huge losses in the global economy, estimated at billions of dollars annually, and destroys a massive amount of installations and metal machinery . Organic coating is mainly used to protect steel from the surrounding corrosive medium by forming a physical barrier and by acting as a reservoir for anticorrosive agents . Owing to its excellent chemical and water penetration resistance, chlorinated rubber (CR) has long been used in protective coatings for steel structures such as; bridges, marine applications, swimming pool, and so on.…”

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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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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Enhancement of corrosion protection of mild steel by chitosan/ZnO nanoparticle composite membranes

Cited by 112 publications

References 34 publications

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

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

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Enhancement of corrosion protection of mild steel by chitosan/ZnO nanoparticle composite membranes

Cited by 112 publications

References 34 publications

Electrophoretic Deposition of Chitosan Films Doped with Nd2Ti2O7Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd2Ti2O7Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Chitosan as a green inhibitor for mild steel corrosion: Thermodynamic and electrochemical evaluations

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

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Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions

Electrophoretic Deposition of Chitosan Films Doped with Nd₂Ti₂O₇Nanoparticles as Protective Coatings against Corrosion in Saline Solutions