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首页> 外文期刊>Journal of industrial and engineering chemistry >Utilization of sulfidated poly (acrylamide-vinyl acetate) as a new corrosion inhibitor for carbon steel in acidic media
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Utilization of sulfidated poly (acrylamide-vinyl acetate) as a new corrosion inhibitor for carbon steel in acidic media

机译：硫化聚（丙烯酰胺-乙酸乙烯酯）作为酸性介质中碳钢的新型缓蚀剂

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This paper study the utilization of sulfidated poly (acrylamide-vinyl acetate) (SG), which is previously prepared by the expose of poly (acrylamide-vinyl acetate) copolymer (AG) to H2S gas (15 ppm), as a new corrosion inhibitor for carbon steel in acidic media. The corrosion inhibition efficiency of these inhibitors is detected in carbon steel surface in 1 M HCl solution by the weight loss and electrochemical techniques. Untreated and treated steel surfaces were examined by scanning electron microscopy (SEM). The obtained results show that the maximum inhibition efficiency (eta(p)) by SG inhibitor in 1 M HCl solution at 500 ppm and 303 K was 96.71%. Also, the potentiodynamic polarization curves indicated that the investigated inhibitors behave as a mixed type inhibitor. Adsorption of these inhibitors on the carbon steel surface was found to obey Langmuir's adsorption isotherm. Both of the computed quantum chemical properties viz., electron affinity (EA), highest occupied molecular orbital (E-HOMO), the lowest unoccupied molecular orbital (E-LUMO), energy gap Delta E = E-HOMO-E-LUMO, dipole moment (mu), log P and Delta N showed good correlation with experimental inhibition efficiency. 2014 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译：本文研究了硫化聚（丙烯酰胺-乙酸乙烯酯）（SG）的利用，该硫化物是通过将聚（丙烯酰胺-乙酸乙烯酯）共聚物（AG）暴露于H2S气体（15 ppm）作为新型腐蚀抑制剂而制备用于酸性介质中的碳钢。通过减重和电化学技术在碳钢表面的1 M HCl溶液中检测了这些缓蚀剂的缓蚀效率。通过扫描电子显微镜（SEM）检查未处理和已处理的钢表面。获得的结果表明，SG抑制剂在500 ppm和303 K的1 M HCl溶液中的最大抑制效率（eta（p））为96.71％。另外，电位动力学极化曲线表明所研究的抑制剂表现为混合型抑制剂。发现这些抑制剂在碳钢表面上的吸附符合朗缪尔的吸附等温线。计算出的两种量子化学性质，即电子亲和力（EA），最高占据分子轨道（E-HOMO），最低未占据分子轨道（E-LUMO），能隙Delta E = E-HOMO-E-LUMO，偶极矩（μ），log P和Delta N与实验抑制效率具有良好的相关性。 2014大韩工业化学工程学会。由Elsevier B.V.发布。保留所有权利。

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