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首页> 外文期刊>International Journal of Electrochemical Science >Electrochemical Behavior of Smart N-Isopropyl Acrylamide Copolymer Nanogel on Steel for Corrosion Protection in Acidic Solution
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Electrochemical Behavior of Smart N-Isopropyl Acrylamide Copolymer Nanogel on Steel for Corrosion Protection in Acidic Solution

机译：智能N-异丙基丙烯酰胺共聚物纳米凝胶在钢上​​的电化学行为对酸性溶液的腐蚀防护

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摘要

Nanostructured composites increase their sensitivity and performance when employed as material incorrosive environments. In the present study, poly(2-acrylamido-2-methyl-1-propane- sulfonic acid - co-N-isopropylacrylamide) hydrogels, were synthesized by free- radical crosslinking solutionpolymerization with different ratios of monomers to form colloidal hydrogels shell around poly(vinylalcohol) core through epichlorohydrine, in order to obtain well-define PVA(AMPS-NIPAm) core/shellnanogels with diameter nearly 30nm, which characterized by Fourier transform infrared spectroscopy(FTIR), transmission electron microscopy (TEM) and dynamic light scattering (DLS) . The inhibitioneffect of PVA-NIPAm/AMPS nanogel on the corrosion of steel in 1.0 M HCl solution was studied bypotentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS).Potentiodynamic polarization studies indicate that the new PVA-NIPAm/AMPS nanogel is a mixedinhibitor. Impedance studies show that a protective film is formed on the steel surface in the presenceof the inhibitor and exhibit its protective nature even at low concentration. The results of polarizationmeasurements are in good agreement with those obtained from EIS data for acting PVA- NIPAm/AMPS nanogel as an efficient corrosion inhibitor in 1 M HCl.
机译：当用作材料腐蚀环境时，纳米结构复合材料可提高其灵敏度和性能。在本研究中，通过自由基交联溶液聚合以不同比例的单体合成聚（2-丙烯酰胺基-2-甲基-1-丙烷-磺酸-co-N-异丙基丙烯酰胺）水凝胶，形成围绕聚甲基丙烯酸甲酯的胶体水凝胶壳。 （乙烯醇）核通过表氯醇，以得到直径近30nm的精细定义的PVA（AMPS-NIPAm）核/壳聚糖，其特征在于傅里叶变换红外光谱（FTIR），透射电子显微镜（TEM）和动态光散射（ DLS）。通过电势极化曲线和电化学阻抗谱（EIS）研究了PVA-NIPAm / AMPS纳米凝胶对钢腐蚀的抑制作用。电势极化研究表明，新型PVA-NIPAm / AMPS纳米凝胶是一种混合抑制剂。阻抗研究表明，在存在抑制剂的情况下，在钢表面形成了保护膜，即使在低浓度下也表现出保护性。极化测量的结果与从EIS数据获得的结果相吻合，EIS数据表明PVA-NIPAm / AMPS纳米凝胶在1 M HCl中起有效的腐蚀抑制剂作用。

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