Anticorrosion organic–inorganic hybrid films constructed on iron substrates using self-assembled polyacrylic acid as a functional bottom layer

Yan, Rusen; He, Wei; Zhai, Tianhua; Ma, Houyi

doi:10.1016/j.electacta.2018.11.117

Cited by 29 publications

(10 citation statements)

References 42 publications

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“…Figure 3d,e show that the impedance spectrum of carbon steel consisted of a high-frequency end-capacity arc. [11,39] As the concentration of lignin-EPTAC increased, the diameter of the capacitive anti-arc increased gradually, especially at 100 mg/L. A single capacitive reactance arc indicated that the corrosion was controlled by charge transfer between electrode and the solution.…”

Section: Electrochemical Analysis Of Inhibition Performance Of Lignmentioning

confidence: 99%

Construction of eco‐friendly corrosion inhibitor lignin derivative with excellent corrosion‐resistant behavior in hydrochloric acid solution

Gao

Zhao

Liu

et al. 2020

Materials & Corrosion

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Organic corrosion inhibitors from natural plant resources have received extensive attention in recent years. Herein, an eco-friendly corrosion inhibitor lignin-(2,3-epoxypropyl)trimethyl ammonium chloride (EPTAC) was successfully prepared by grafting EPTAC to kraft lignin. The inhibiting efficiency and its inhibition mechanism were investigated using electrochemical methods, adsorption thermodynamics analysis, and molecular dynamic simulation. The results showed that the lignin-EPTAC molecules formed a protective film on iron surface, resulting in an excellent inhibition efficiency of 97.80% at 100 mg/L concentration. The average surface roughness of steel samples was reduced to 26.6 nm from the original 99.3 nm. The adsorption of lignin-EPTAC molecules on the steel surface follows Langmuir adsorption isotherm model and was a physical-chemical process as well as an exothermic process of entropy reduction. This adsorption of lignin-EPTAC was a conjugated system dominated by benzene ring of lignin-EPTAC to form a chemical bond on the steel surface by conjugation, besides a positive interaction between the metal surface and the positively charged N ions in the head group of lignin-EPTAC.

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Section: Electrochemical Analysis Of Inhibition Performance Of Lignmentioning

confidence: 99%

Construction of eco‐friendly corrosion inhibitor lignin derivative with excellent corrosion‐resistant behavior in hydrochloric acid solution

Gao

Zhao

Liu

et al. 2020

Materials & Corrosion

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“…The surface tension and critical micelle concentration (CMC) value of the corrosion inhibitor 7 were determined by surface tensiometer in 1 M HCl solution at 333 K. Using the individual CMC values, the standard Gibbs free energy of micelle formation (∆G • mic ) was determined by Equation (16).…”

Section: Surface Tensionmentioning

confidence: 99%

“…Moreover, polymers are usually less toxic and adsorb more strongly than their monomer analogs [14,15]. It is expected that polymers can act as better inhibitors for protecting metal corrosion than their corresponding low molecular organics/monomers [16]. Biocompatible amino acids have been used in pharmaceuticals and biological applications for many decades [17].…”

Section: Introductionmentioning

confidence: 99%

New, Amino Acid Based Zwitterionic Polymers as Promising Corrosion Inhibitors of Mild Steel in 1 M HCl

Mazumder

2019

Coatings

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The zwitterionic monomers, N,N'-diallylamino propanephosphonate and amino acid residual N,N'-diallyl-l-methionine hydrochloride were synthesized, with excellent yields. These monomers were utilized in the preparation of zwitterionic homo and co-cyclopolymers 5-7 in aqueous solution using 2,2 -azobis (2-methylpropionamidine) dihydrochloride as an initiator. The polymers were characterized by FT-IR, NMR, and TGA. The performance of these synthesized polymers on mild steel in acidic solution was investigated by gravimetric method, Tafel extrapolation, linear polarization resistance, and electrochemical impedance spectroscopy. At 313 K, the maximum inhibition efficiencies of corrosion inhibitors 5-7 at 4.50 × 10 −4 mol L −1 were found to be 85.2%, 83.3%, and 99.5%, respectively. The inhibition efficiencies obtained from gravimetric weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy measurements were in good agreement. Different adsorption isotherms were also explored to find the best fit, and found to obey Langmuir adsorption isotherm. The thermodynamic parameters, such as activation energy (E a ), standard enthalpy of activation (∆H*), standard entropy of activation (∆S*), adsorption-desorption equilibrium constant (K ads ), and standard free energy of adsorption (∆G o ads ), were determined. Electrochemical data indicated that the zwitterionic copolymer 7 acts as a mixed type inhibitor under the influence of anodic control. The surface morphology of mild steel corrosion was evaluated without and with corrosion inhibitors by AFM, SEM-EDX, and XPS, which confirmed the adsorption of inhibitor molecules on the metal surface.

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“…Polyacrylic acid (PAA) is a cheap and environmentally friendly water-soluble organic polymer. The carboxylic acid groups of PAA can absorb a large number of metal ions, drugs and other positively charged substances, so it is widely used in the eld of biomaterials [25]. Gentamicin (GS) is a kind of aminoglycoside, which is widely used in antibacterial therapy in clinic.…”

Section: Introductionmentioning

confidence: 99%

Assembly of Gentamicin and Zn2+ Loaded Coatings on TiO2 Nanotubes to Synergistically Improve the Blood Compatibility, Endothelial Cell Growth and Antibacterial Activities

Pan

Yang

et al. 2020

Preprint

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Titanium and its alloys are widely used in blood contacting implantable and interventional medical devices; however, their biocompatibility is still facing great challenges. In this study, with the aim of improving the biocompatibility and antibacterial activities of titanium, TiO2 nanotubes with a diameter of about 30 nm were firstly prepared on the titanium surface by anodization, followed by the introduction of polyacrylic acid (PAA) and gentamicin (GS) on the nanotube surface by layer-by-layer method, and finally zinc ions were loaded into the surface to improve the bioactivities. The nanotubes have excellent hydrophilic properties and special nanotube-like structure, which can selectively promote the albumin adsorption and enhance the blood compatibility and promote the growth and functional expression of endothelial cells to a certain extent. After the introduction of PAA and GS, although the super-hydrophilicity cannot be achieved, the results of platelet adhesion, cGMP activity, hemolysis rate and partial thromboplastin time (APTT) showed that the blood compatibility was improved, and the blood compatibility was further enhanced after zinc ions loading on the surface. On the other hand, the surface modified materials showed good cytocompatibility to endothelial cells. The introduction of PAA and zinc ions not only promoted the adhesion and proliferation of endothelial cells, but also up-regulated expression of vascular endothelial growth factor (VEGF) and nitric oxide (NO). The slow and continuous release of GS and Zn2+ for more than 14 days, which can significantly improve the antibacterial properties of the materials. Therefore, the present study provides an effective method for the surface modification of titanium-based blood-contacting materials to simultaneously endow with good blood compatibility, endothelial growth behaviors and antibacterial properties.

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Anticorrosion organic–inorganic hybrid films constructed on iron substrates using self-assembled polyacrylic acid as a functional bottom layer

Cited by 29 publications

References 42 publications

Construction of eco‐friendly corrosion inhibitor lignin derivative with excellent corrosion‐resistant behavior in hydrochloric acid solution

Construction of eco‐friendly corrosion inhibitor lignin derivative with excellent corrosion‐resistant behavior in hydrochloric acid solution

New, Amino Acid Based Zwitterionic Polymers as Promising Corrosion Inhibitors of Mild Steel in 1 M HCl

Assembly of Gentamicin and Zn2+ Loaded Coatings on TiO2 Nanotubes to Synergistically Improve the Blood Compatibility, Endothelial Cell Growth and Antibacterial Activities

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