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聚（2-丙烯酰胺基-2-甲基丙烷磺酸钠-共-苯乙烯）/磁铁矿纳米颗粒复合材料作为钢的缓蚀剂的合成与评价

Synthesis and evaluation of poly(Sodium 2-Acrylamido-2-Methylpropane Sulfonate-co-Styrene)/magnetite nanoparticle composites as corrosion inhibitors for steel.

作者信息

El-Mahdy Gamal A, Atta Ayman M, Al-Lohedan Hamad A

机构信息

Chemistry Department, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.

出版信息

Molecules. 2014 Jan 30;19(2):1713-31. doi: 10.3390/molecules19021713.

DOI:10.3390/molecules19021713
PMID:24487568
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6271306/
Abstract

Self-stabilized magnetic polymeric composite nanoparticles of coated poly-(sodium 2-acrylamido-2-methylpropane sulfonate-co-styrene)/magnetite (PAMPS-Na-co-St/Fe3O4) were prepared by emulsifier-free miniemulsion polymerization using styrene (St) as a monomer, 2-acrylamido-2-methylpropane sulfonic acid sodium salt (AMPS-Na) as an ionic comonomer, N,N-methylenebisacrylamide (MBA) as crosslinker, hexadecane (HD) as a hydrophobic solvent, and 2,2-azodiisobutyronitrile (AIBN) as an initiator in the presence of hydrophobic oleic acid coated magnetite particles. Hydrophobic oleic acid coated magnetite particles with an average size of about 7-10 nm were prepared with the new modified water-based magnetite ferrofluid, synthesized by a chemical modified coprecipitation method. The morphology and the particle size distributions of the crosslinked PAMPS-Na-co-St/Fe3O4 composite were observed and analyzed by transmission electron microscopy (TEM). The average Fe3O4 content of PAMPS-Na-co-St/Fe3O4 was determined by thermogravimetric analysis (TGA). The inhibitory action of PAMPS-Na-co-St/Fe3O4 towards steel corrosion in 1 M HCl solutions has been investigated by polarization and electrochemical impedance spectroscopy (EIS) methods. Polarization measurements indicate that PAMPS-Na-co-St/Fe3O4 acts as a mixed type-inhibitor and the inhibition efficiency increases with inhibitor concentration. The results of potentiodynamic polarization and EIS measurements clearly showed that the inhibition mechanism involves blocking of the steel surface by inhibitor molecules via adsorption.

摘要

以苯乙烯（St）为单体、2-丙烯酰胺基-2-甲基丙磺酸钠（AMPS-Na）为离子共聚单体、N,N-亚甲基双丙烯酰胺（MBA）为交联剂、十六烷（HD）为疏水溶剂、2,2-偶氮二异丁腈（AIBN）为引发剂，在疏水油酸包覆的磁铁矿颗粒存在下，通过无乳化剂细乳液聚合制备了包覆聚（2-丙烯酰胺基-2-甲基丙烷磺酸钠-共-苯乙烯）/磁铁矿（PAMPS-Na-共-St/Fe3O4）自稳定磁性聚合物复合纳米粒子。采用化学改性共沉淀法合成了新型改性水基磁铁矿铁流体，制备了平均粒径约为7-10 nm的疏水油酸包覆磁铁矿颗粒。通过透射电子显微镜（TEM）观察和分析了交联PAMPS-Na-共-St/Fe3O4复合材料的形貌和粒径分布。通过热重分析（TGA）测定了PAMPS-Na-共-St/Fe3O4的平均Fe3O4含量。采用极化和电化学阻抗谱（EIS）方法研究了PAMPS-Na-共-St/Fe3O4对1 M HCl溶液中钢腐蚀的抑制作用。极化测量表明，PAMPS-Na-共-St/Fe3O4作为混合型缓蚀剂，缓蚀效率随缓蚀剂浓度的增加而提高。动电位极化和EIS测量结果清楚地表明，缓蚀机理包括缓蚀剂分子通过吸附作用对钢表面的阻挡。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/5ea15f645aee/molecules-19-01713-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/7e3b523b4fac/molecules-19-01713-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/8055a67b2e10/molecules-19-01713-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/acece77c02c0/molecules-19-01713-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/d9ad64154f20/molecules-19-01713-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/2cfe456243cc/molecules-19-01713-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/93045d5e8426/molecules-19-01713-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/791a2189b717/molecules-19-01713-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/ba33caeab8b3/molecules-19-01713-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/5ea15f645aee/molecules-19-01713-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/7e3b523b4fac/molecules-19-01713-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/8055a67b2e10/molecules-19-01713-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/acece77c02c0/molecules-19-01713-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/d9ad64154f20/molecules-19-01713-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/2cfe456243cc/molecules-19-01713-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/93045d5e8426/molecules-19-01713-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/791a2189b717/molecules-19-01713-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/ba33caeab8b3/molecules-19-01713-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/2bb4/6271306/5ea15f645aee/molecules-19-01713-g008.jpg

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本文引用的文献

[1]
Superparamagnetic iron oxide nanoparticles (SPIONs): development, surface modification and applications in chemotherapy.

Adv Drug Deliv Rev. 2010-5-26

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Organic phase synthesis of monodisperse iron oxide nanocrystals using iron chloride as precursor.

Nanoscale. 2010-5-11

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Self-stabilized magnetic polymeric composite nanoparticles by emulsifier-free miniemulsion polymerization.

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