A novel polypropylene glycol/silver nanoparticles (PPG/AgNPs) composite was prepared in-situ using natural honey as the reducing and stabilizing agent. Characterization of the composite was done by UV-Vis spectroscopy, FTIR, TEM, XRD, and EDAX. The TEM results reveal that the nanoparticles are spherical in shape. XRD and EDAX results confirm the presence of elemental silver in the polymer matrix. The influence of the prepared composite on the corrosion inhibition of carbon steel in 0.5 M H2SO4 solution was studied by weight loss, electrochemical impedance spectroscopy (EIS), linear polarization resistance (LPR) and potentiodynamic polarization (PDP)) supported with surface analysis via scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDAX), techniques and water contact angle measurements. Results show that PPG/AgNPs is effective inhibitor for carbon steel in 0.5 M H2SO4 solution and adsorbs onto the metal surface via chemisorption mechanism. Maximum inhibition efficiency of 94% is afforded by the highest studied concentration of PPG/AgNPs at 60 oC from weight loss measurements. Potentiodynamic polarization results reveal that the composite acts as a mixed-type corrosion inhibitor. Adsorption of PPG/AgNPs composite onto the carbon steel surface follows Temkin adsorption isotherm. The SEM, EDAX, and water contact angle images confirm the formation of PPG/AgNPs protective film on the carbon steel surface.

Polypropylene glycol/silver nanoparticles composite: In-situ preparation, characterization, and anticorrosion property for carbon steel in acid solution

2019 Spring National Meeting

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