Emulsion nanoparticles of polyaniline were synthesized in an aqueous solution using ammonium persulfate as an oxidant in the presence of nanometer-size SiO2 and hydroxylpropylcellulose as a stabilizer. Different concentrations of prepared nanocomposites were blended with poly(vinyl acetate) as the major matrix and coated on the carbon steel. The product was characterized and compared by (XRD), (FTIR), (SEM), and (TEM). According to the results 1 wt.% of HPC-PANI/SiO2 nanocomposite in PVAc has a much lower corrosion current in NaCl solution and 3 wt.% of HPC-PANI/SiO2 nanocomposite in PVAc has the best corrosion protection in HCl.
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Khademian et al. (2015) studied this question.
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