Organic Corrosion Inhibitors

Brycki, Bogumił; Kowalczyk, Iwona; Szulc, Adrianna; Kaczerewska, Olga; Pakiet, Marta

doi:10.5772/intechopen.72943

Cited by 80 publications

(58 citation statements)

References 123 publications

(137 reference statements)

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“…The results were grouped according to the drying time and compared with their concentrations. The behavior of the polarization curves depends of the inhibitor such as cathodic, anodic and organic inhibitors [18]. For the organic inhibitors, the effect of the solution in the metal sample can be presented by a mixed behavior [19].…”

Section: Polarisation Curvesmentioning

confidence: 99%

Optimization and characterisation of commercial water-based volatile corrosion inhibitor

2019

Int. J. Corros. Scale Inhib.

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Volatile corrosion inhibitor (VCI) provides protection for metal surfaces. VCI coating and molecules attach themselves to metal surfaces to form both a physical film when contacted and an invisible thin film for indirect contact through Vapour (only a few molecules thick), thus inhibiting metals atmospheric corrosion. Optimization and characterisation of commercial water-based volatile corrosion inhibitor VCI (Vapour-Phase-Protection, VAPPRO 837C diluted commercial solution from CORPPRO) was prepared to determine their characteristics and effectiveness against corrosion of carbon steel. The main scope of this work is to characterise the rheological and corrosion inhibition properties of the VAPPRO 837C with varying formulations and processing parameters (coating and drying times). Different tests were performed to determine the corrosion behavior of inhibitor. The application of VCI on the metal surface was done by dip-coating process. An Electrochemical Workstation from HCH Instruments has been used to evaluate the corrosion inhibition efficiency of the VCI and to determine the corrosion rate of the uncoated and coated samples. In addition, viscosity tests were carried out in order to determine the rheological properties of the formulation, as well as Freeze-Thaw resistance of water-borne coatings and pH tests were done. A FTIR spectrometer has been used to determine the functional groups present at a specific concentration. Results reveal that the most effective VCI film was obtained from a 0.25 CORPPRO (Concentrated VCI) (vol%) formulation using a coating time of 10 min and a drying time of 24 h. Therefore, 0.25 CORPPRO would be the optimum concentration to be used because it is able to achieve the highest corrosion inhibition efficiency with the optimum coating drying time.

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Section: Polarisation Curvesmentioning

confidence: 99%

Optimization and characterisation of commercial water-based volatile corrosion inhibitor

2019

Int. J. Corros. Scale Inhib.

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“…Besides the excellent surface activity, gemini surfactants act also as a very efficient microbiocide and corrosion inhibitors, which is directly related to the adsorption capacity of cationic salts on negatively charged surfaces [ 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ]. Adsorption of alkylammonium salt on the cell wall of the microorganism causes damage to the wall, and leakage of potassium ions and low molecular components of the bacterial cell, which in turn leads to cell death [ 32 , 33 , 34 , 35 ].…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Activity of Gemini Surfactants with Azapolymethylene Spacer

et al. 2020

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A series of 21 azapolymethylene gemini surfactants were obtained. The synthesis of the title surfactants in one- or two-step reaction proceeds with good yields. The structure and the purity of the synthesized compounds were determined by 1H and 13C NMR, ESI-MS spectra, and elemental analysis. Moreover, 2D COSY, HMBC, and HSQC spectra were performed. The minimal inhibitory concentrations (MIC) of the synthesized compounds were determined against fungi: Candida albicans, Aspergillus niger, Penicillium chrysogenum and bacteria: Escherichia coli,Pseudomonas aeruginosa, Staphylococcus aureus, and Bacillus subtilis. Also, the critical micelle concentrations (CMC) were determined. The relationship between antimicrobial and surface activity and surfactant structure has been determined.

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“…detergents, solubilisers, biocides, and disperser agents, and now more recently, corrosion inhibitors [14,[17][18][19][20][21]. Cationic surfactants are very efficient inhibitors because the positive charge causes strong attachment to metal surfaces [12,14,18,25].…”

Section: Introductionmentioning

confidence: 99%

Gemini surfactant as multifunctional corrosion and biocorrosion inhibitors for mild steel

Pakiet

Kowalczyk

Garcı́a

et al. 2019

Bioelectrochemistry

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Biocorrosion is an important type of corrosion which leads to economic losses across oli and gas industries, due to increased monitoring, maintenance, and a reduction in platform availability. Anaerobic sulfate reducing bacteria (SRB) are known to accelerate the rate of corrosion tenfold, by secreting specific enzymes. Mitigation strategies include: (i) cleaning procedures; (ii) addition of microbiocides; (iii) antifouling coatings and (iv) cathodic protection. Ideally, a chemical compound engineered to mitigate against biocorrosion would possess both antimicrobial properties, as well as efficient corrosion inhibition. Gemini surfactants have shown efficacy in both of these properties, however there still remains a lack of electrochemical information regarding biocorrosion inhibition. The inhibition of corrosion and biocorrosion, by cationic gemini surfactants, of carbon steel was investigated. The results showed that the inhibition efficiency of the gemini surfactants was high (consistently > 95 %), even at low concentrations, with the most efficient concentration being above the critical micelle concentration (CMC). Gemini surfactants also showed strong antimicrobial activity, with a minimum inhibitory concentration (0.018 mM). Corrosion inhibition was investigated by electrochemical impedance spectroscopy (EIS) and linear polarisation resistance (LPR), with biocorrosion experiments carried out in an anaerobic environment. Surface morphology was analysed using scanning electron microscopy (SEM).

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Organic Corrosion Inhibitors

Cited by 80 publications

References 123 publications

Optimization and characterisation of commercial water-based volatile corrosion inhibitor

Optimization and characterisation of commercial water-based volatile corrosion inhibitor

Antimicrobial Activity of Gemini Surfactants with Azapolymethylene Spacer

Gemini surfactant as multifunctional corrosion and biocorrosion inhibitors for mild steel

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