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Molecules 2014, 19(5), 6246-6262; doi:10.3390/molecules19056246
Article

Synthesis and Application of Hybrid Polymer Composites Based on Silver Nanoparticles as Corrosion Protection for Line Pipe Steel

1,2,* , 1,3, 1
 and
1
1 Surfactants Research Chair, King Saud University, Chemistry Department, College of Science, P.O.Box-2455, Riyadh-11451, Saudi Arabia 2 Petroleum Application Department, Egyptian Petroleum Research Institute, Cairo 11727, Egypt 3 Chemistry Department, Helwan University, Helwan, Cairo 11795, Egypt
* Author to whom correspondence should be addressed.
Received: 2 April 2014 / Revised: 14 May 2014 / Accepted: 14 May 2014 / Published: 16 May 2014
(This article belongs to the Section Organic Synthesis)
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Abstract

A facile method was developed to synthesize in high yield dispersed silver nanoparticles (AgNPs) with small particle sizes of less than 10 nm. Silver nitrate was reduced to silver nanoparticles by p-chloroaniline in the presence of polyoxyethylene maleate 4-nonyl-2-propylene-phenol (NMA) as a stabilizer. The produced AgNPs were used to prepare hybrid polymer based on N-isopropylacrylamide (NIPAm), 2-acrylamido-2-methylpropane sulfonic acid (AMPS), N,N-methylenebisacrylamide (MBA) and potassium persulfate (KPS) using a semi-batch solution polymerization method. The prepared AgNPs and hybrid polymer were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) patterns and transmission electron microscopy (TEM). The corrosion inhibition activity of the AgNPs and hybrid polymer towards steel corrosion in the presence of hydrochloric acid has been investigated by polarization and electrochemical impedance spectroscopy (EIS) methods. Polarization measurements indicate that the AgNPs and hybrid polymer 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.
Keywords: silver hybrid polymer; silver nanoparticles; nanogels; N-isopropylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid copolymer; electrohemical; corrosion inhibitor silver hybrid polymer; silver nanoparticles; nanogels; N-isopropylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid copolymer; electrohemical; corrosion inhibitor
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.

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Atta, A.M.; El-Mahdy, G.A.; Al-Lohedan, H.A.; Ezzat, A.O. Synthesis and Application of Hybrid Polymer Composites Based on Silver Nanoparticles as Corrosion Protection for Line Pipe Steel. Molecules 2014, 19, 6246-6262.

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