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Molecules 2015, 20(1), 1244-1261; doi:10.3390/molecules20011244

Preparation and Application of Crosslinked Poly(sodium acrylate)-Coated Magnetite Nanoparticles as Corrosion Inhibitors for Carbon Steel Alloy

1
Surfactants Research Chair, Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
2
Petroleum Application Department, Egyptian Petroleum Research Institute, Cairo 11727, Egypt
3
Chemistry Department, Faculty of Science, Helwan University, Helwan 11795, Cairo, Egypt
*
Author to whom correspondence should be addressed.
Academic Editor: Derek J. McPhee
Received: 5 December 2014 / Accepted: 7 January 2015 / Published: 14 January 2015
(This article belongs to the Section Molecular Diversity)
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Abstract

This work presents a new method to prepare poly(sodium acrylate) magnetite composite nanoparticles. Core/shell type magnetite nanocomposites were synthesized using sodium acrylate as monomer and N,N-methylenebisacrylamide (MBA) as crosslinker. Microemulsion polymerization was used for constructing core/shell structures with magnetite nanoparticles as core and poly(sodium acrylate) as shell. Fourier transform infrared spectroscopy (FTIR) was employed to characterize the nanocomposite chemical structure. Transmittance electron microscopy (TEM) was used to examine the morphology of the modified poly(sodium acrylate) magnetite composite nanoparticles. These particle will be evaluated for effective anticorrosion behavior as a hydrophobic surface on stainless steel. The composite nanoparticles has been designed by dispersing nanocomposites which act as a corrosion inhibitor. The inhibition effect of AA-Na/magnetite composites on steel corrosion in 1 M HCl solution was investigated using potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). Polarization measurements indicated that the studied inhibitor acts as mixed type corrosion inhibitor. EIS spectra exhibit one capacitive loop. The different techniques confirmed that the inhibition efficiency reaches 99% at 50 ppm concentration. This study has led to a better understanding of active anticorrosive magnetite nanoparticles with embedded nanocomposites and the factors influencing their anticorrosion performance. View Full-Text
Keywords: magnetite; nanoparticles; core-shell; poly(sodium acrylate) composite; corrosion inhibitors; hydrophilic; hydrophobic; oleic; microemulsion magnetite; nanoparticles; core-shell; poly(sodium acrylate) composite; corrosion inhibitors; hydrophilic; hydrophobic; oleic; microemulsion
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Atta, A.M.; El-Mahdy, G.A.; Al-Lohedan, H.A.; El-Saeed, A.M. Preparation and Application of Crosslinked Poly(sodium acrylate)-Coated Magnetite Nanoparticles as Corrosion Inhibitors for Carbon Steel Alloy. Molecules 2015, 20, 1244-1261.

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