Non toxic biodegradable cationic gemini surfactants as novel corrosion inhibitor for mild steel in hydrochloric acid medium and synergistic effect of sodium salicylate: Experimental and theoretical approach

Mobin, Mohammad; Aslam, Ruby; Aslam, Jeenat

doi:10.1016/j.matchemphys.2017.01.037

Cited by 132 publications

(42 citation statements)

References 67 publications

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“…The chosen equivalent circuit for SPEES based IPMC membrane composed of solution resistance (R s ) and constant phase elements (CPE) and charge transfer resistance (R ct ). CPE a non-ideal capacitor substituted for double layer capacitance (C dl ) and its impedance can be calculated according to equation (3) 53,54 .where Y o is the amplitude comparable to the CPE and n is the CPE exponent (shows the roughness of the electrode with values varies from 0 to 1). An ideal capacitor shows n = 1, while n = 0 shows resistor, n = −1, then CPE resembles an inductor and for n = 0.5 the Warburg diffusion behavior 54,55 , j is the square root of −1 (imaginary number) and ω represent angular frequency in Radius −1 .…”

Section: Resultsmentioning

confidence: 99%

Development, Characterization and Electromechanical Actuation Behavior of Ionic Polymer Metal Composite Actuator based on Sulfonated Poly(1,4-phenylene ether-ether-sulfone)/Carbon Nanotubes

Khan

Jain

Banerjee

et al. 2018

Sci Rep

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This paper presents the development of new cost-effective hybrid-type sulfonated poly(1,4-phenylene ether-ether-sulfone) (SPEES) and functionalized single-walled carbon nanotubes (SWNT) based actuators produced by the film-casting method followed by chemical reduction of Pt ions as electrodes. The preparation of SPEES was investigated in details and sulfonation of polymer was characterized by ion exchange capacity (IEC), Fourier-transform infrared (FTIR) and degree of sulfonation measurements. SPEES having degree of sulfonation of 126% was blended with SWNT and used to fabricate IPMC actuator. The chemical composition and detailed structure of SPEES-SWNT ionic polymer membranes were confirmed by FTIR, EDX and transmittance electron microscopy (TEM) analysis. Scanning electron microscopy (SEM) micrographs revealed the homogeneously distributed layers of Pt electrodes on the surfaces of IPMC membrane. The electrochemical and electromechanical properties of SPEES-SWNT-Pt-based IPMC actuator shows a better actuation performance than conventional IPMC actuators in terms of higher IEC, Proton conductivity, higher current density, electrochemical impedance spectroscopy (EIS), and large bending deflection. The robust, flexible and mechanically strong membranes prepared by the synergistic combination of SPEES and SWNT may have considerable potential as actuator materials for robotic and biomimetic applications.

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Section: Resultsmentioning

confidence: 99%

Development, Characterization and Electromechanical Actuation Behavior of Ionic Polymer Metal Composite Actuator based on Sulfonated Poly(1,4-phenylene ether-ether-sulfone)/Carbon Nanotubes

Khan

Jain

Banerjee

et al. 2018

Sci Rep

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“…The gemini alkylammonium salts possess a very low critical micelle concentrations (cmc), which is up to hundred times lower than cmc's of corresponding monomeric surfactants. Gemini surfactants also have a larger molecular area in comparison to monomeric analogs which cause them to act more efficiently as corrosion inhibitors [80,[101][102][103][104][105][106][107][108][109][110]. Dimeric surfactant 1,4-tetramethylene-bis(N-dodecyl-N,N-dimethylammonium bromide) (12-4-12) is more efficient in decreasing corrosion rate of carbon steel in 1 M HCl than its monomeric analogue N-dodecyl-N,N,N-trimethylammonium bromide (DTAB).…”

Section: Quaternary Ammonium Salts As Corrosion Inhibitorsmentioning

confidence: 99%

“…Inhibition efficiency (IE%) is affected not only by number of positively charged nitrogen atoms but also depends on the length of alkyl chain. Longer the alkyl chain higher is the inhibition efficiency [97,105] (Table 3). The same correlation is observed in the spacer length.…”

Section: Quaternary Ammonium Salts As Corrosion Inhibitorsmentioning

confidence: 99%

Organic Corrosion Inhibitors

Brycki¹,

Kowalczyk²,

Szulc³

et al. 2018

Corrosion Inhibitors, Principles and Recent Applications

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Organic corrosion inhibitors are one of the five ways, besides material selection, design, cathodic protection and coatings, to protect materials against corrosion. Corrosion is an ubiquitous phenomena that deteriorates all materials, metals, plastics, glass and concrete. The costs of corrosion are tremendous and amounts to 4.0% of gross domestic product (GDP) in USA. The similar losses of GDP are noted in all countries around the world. At this point of time, there is no way to completely stop the corrosion processes. Some new solutions can only slow this process. Organic corrosion inhibitors are widely used in industry because of their effectiveness at wide range of temperatures, compatibility with protected materials, good solubility in water, low costs and relatively low toxicity. Organic corrosion inhibitors adsorb on the surface to form protective film which displace water and protect it against deteriorating. Effective organic corrosion inhibitors contain nitrogen, oxygen, sulfur and phosphorus with lone electron pairs as well can contain structural moieties with π-electrons that interact with metal favoring the adsorption process. This review presents mechanisms and monitoring of corrosion, laboratory methods for corrosion study, relationship between structure and efficacy of corrosion inhibitions, theoretical approach to design new inhibitors and some aspects of biocorrosion.

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“…They unveiled that the maximum inhibition efficiency at 200 ppm was in the ascending order of CHOGS‐8 < CHOGS‐12 < CHOGS‐16. Mobin et al used ethane‐1,2‐diyl bis( N , N ‐dimethyl‐ N ‐alkylammoniumacetoxy)dichloride ( m ‐E2‐ m , m = 12, 14) as inhibitors to keep the X70 steel fresh . They observed that the hydrophobicity of alkyl chains of m ‐E2‐ m molecules plays a crucial role in the steel protection.…”

Section: Introductionmentioning

confidence: 99%

New surfactants N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides: Preparation and anticorrosion evaluation

Chen

Jiang

Cheng

et al. 2019

Materials & Corrosion

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A new series of N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides (designated as NTA‐n, n = 8, 10, 12, 14, and 16) were synthesized. The electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization showed that NTA‐n could protect availably X70 steel from attack of HCl with an inhibition efficiency of about 95%. And the inhibition ability follows the following sequence: NTA‐8 < NTA‐10 < NTA‐12 < NTA‐14 < NTA‐16, suggesting that prolonging alkyl chain may enhance the inhibition capacity of the molecules. Theoretical investigation backs up well the experiment results. The correlation of theoretical calculation with the experiment results illustrated clearly double logarithmic relations between the corrosion current and the computed quantum chemical parameters such as the highest occupied molecular orbital energy ( E HOMO), energy gap (ΔE), molecular volume ( ν), electronegativity ( χ), the total energy of iron crystal with the adsorbed inhibitor molecule ( E total), the interaction energy of Fe (1 0 0) surface and inhibitor molecules ( E inhibitor), while an equation resembling Hammet relation was existed between the corrosion currents and the fraction of electrons transfer (ΔN). These linear correlations suggest the relation of the inhibitor structure with its inhibition activity: long alkyl chain and electron donating groups in NTA‐n will enhance the corrosion efficiency.

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Non toxic biodegradable cationic gemini surfactants as novel corrosion inhibitor for mild steel in hydrochloric acid medium and synergistic effect of sodium salicylate: Experimental and theoretical approach

Cited by 132 publications

References 67 publications

Development, Characterization and Electromechanical Actuation Behavior of Ionic Polymer Metal Composite Actuator based on Sulfonated Poly(1,4-phenylene ether-ether-sulfone)/Carbon Nanotubes

Development, Characterization and Electromechanical Actuation Behavior of Ionic Polymer Metal Composite Actuator based on Sulfonated Poly(1,4-phenylene ether-ether-sulfone)/Carbon Nanotubes

Organic Corrosion Inhibitors

New surfactants N‐alkyl‐N,N‐dimethyl‐N‐(3‐thienylmethylene)ammonium bromides: Preparation and anticorrosion evaluation

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