Evaluation of Polyether Copolymer as Green Scale and Corrosion Inhibitor in Seawater
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Guangqing Liu
Abstract
A novel environmentally friendly type of corrosion and scale inhibitor, maleic anhydride-allylpolyethoxy carboxylate copolymer (ML10), was synthesized and characterized by FT-IR and 1H-NMR spectroscopic techniques. The anti-scale property of ML10 in seawater was also studied by static tests for scale and the scale deposits were analyzed by X-ray diffraction (XRD) and SEM, respectively. The results showed that the scale deposits surface morphology and size were changed in the presence of ML10. The performance of the synthesized copolymer as corrosion inhibitor for mild steel corrosion was evaluated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) technique. The experimental results indicate that ML10 has a good corrosion inhibition performance and the inhibition efficiency increases with the increase of the ML10 concentration. The adsorption of ML10 obeys Langmuir adsorption isotherm with relatively high value of free energy of adsorption ΔGadsθ. Scanning electron microscopy (SEM) indicated that the corrosion inhibition is due to the formation of a chemisorbed film on the mild steel.
Kurzfassung
Ein neuartiger umweltfreundlicher Korrosions- und Kalkablagerungsinhibitor, Maleinsäureanhydrid-Allylpolyethoxycarboxylat-Copolymer (ML10), wurde synthetisiert und durch FT-IR- und 1H-NMR-Spektroskopie charakterisiert. Die Antikalkeigenschaft von ML10 in Meerwasser wurde auch durch statische Tests auf Kalk (Kesselstein) untersucht, und die Kesselsteinablagerungen wurden mittels Röntgenbeugung (XRD) bzw. SEM analysiert. Die Ergebnisse zeigten, dass die Morphologie und Größe der Ablagerungsoberflächen in Gegenwart von ML10 verändert wurden. Die Leistung des synthetisierten Copolymers als Korrosionsinhibitor für die Korrosion von Weichstahl wurde durch potentiodynamische Polarisation und elektrochemische Impedanzspektroskopie (EIS) bewertet. Die experimentellen Ergebnisse zeigen, dass ML10 ein guter Korrosionsinhibitor ist und die Inhibierungseffizienz mit zunehmender ML10-Konzentration ansteigt. Die Adsorption von ML10 gehorcht der Langmuir-Adsorptionsisotherme mit einer relativ hohen freien Adsorptionsenergie ΔGadsθ. Die Rasterelektronenmikroskopie (SEM) zeigte an, dass die Korrosionsinhibierung auf die Bildung eines chemisorbierten Films auf dem Baustahl zurückzuführen ist.
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© 2019, Carl Hanser Publisher, Munich
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Review Article
- Characteristic and Application of Anionic Dimeric Surfactants: A Review
- Body Care
- Reduction of Irritation Potential Caused by Anionic Surfactants in the Use of Various Forms of Collagen Derived from Marine Sources in Cosmetics for Children
- Environmental Chemistry
- Optimization of Biosorption Conditions for Surfactant Induced Decolorization by Anaerobic Sludge Granules
- Evaluation of Polyether Copolymer as Green Scale and Corrosion Inhibitor in Seawater
- Physical Chemistry
- Schiff' Bases as Corrosion Inhibitor for Aluminum Alloy in Hydrochloric Acid Medium
- Study on the Synergism of Binary Surfactant Mixtures containing N-lauroyl-N-methyl Taurine Sodium
- Effect of Spacer on Surface Activity and Foam Properties of Betaine Gemini Surfactants
- Study on the Complex System of Sodium Lauryl Diphenyl Ether Disulfonate and Dodecyl Dimethyl Hydroxyethyl Ammonium Chloride
- Synthesis
- Synthesis and Properties of 9,10-Dihydroxystearic Acid Ethoxylate
- Synthesis and Properties of Lauryl Phosphate Monoester
- Novel Surfactants
- Dehydroabietyl Glycidyl Ether Grafted Hydroxyethyl Chitosan: Synthesis, Characterization and Physicochemical Properties
Artikel in diesem Heft
- Contents/Inhalt
- Contents
- Review Article
- Characteristic and Application of Anionic Dimeric Surfactants: A Review
- Body Care
- Reduction of Irritation Potential Caused by Anionic Surfactants in the Use of Various Forms of Collagen Derived from Marine Sources in Cosmetics for Children
- Environmental Chemistry
- Optimization of Biosorption Conditions for Surfactant Induced Decolorization by Anaerobic Sludge Granules
- Evaluation of Polyether Copolymer as Green Scale and Corrosion Inhibitor in Seawater
- Physical Chemistry
- Schiff' Bases as Corrosion Inhibitor for Aluminum Alloy in Hydrochloric Acid Medium
- Study on the Synergism of Binary Surfactant Mixtures containing N-lauroyl-N-methyl Taurine Sodium
- Effect of Spacer on Surface Activity and Foam Properties of Betaine Gemini Surfactants
- Study on the Complex System of Sodium Lauryl Diphenyl Ether Disulfonate and Dodecyl Dimethyl Hydroxyethyl Ammonium Chloride
- Synthesis
- Synthesis and Properties of 9,10-Dihydroxystearic Acid Ethoxylate
- Synthesis and Properties of Lauryl Phosphate Monoester
- Novel Surfactants
- Dehydroabietyl Glycidyl Ether Grafted Hydroxyethyl Chitosan: Synthesis, Characterization and Physicochemical Properties
