Abstract
This work presents a new method to prepare monodisperse magnetite nanoparticles capping with new cationic surfactants based on rosin. Core/shell type magnetite nanoparticles were synthesized using bis-N-(3-levopimaric maleic acid adduct-2-hydroxy) propyl-triethyl ammonium chloride (LPMQA) as capping agent. Fourier transform infrared spectroscopy (FTIR) was employed to characterize the nanoparticles chemical structure. Transmittance electron microscopies (TEM) and X-ray powder diffraction (XRD) were used to examine the morphology of the modified magnetite nanoparticles. The magnetite dispersed aqueous acid solution was evaluated as an effective anticorrosion behavior of a hydrophobic surface on steel. The inhibition effect of magnetite nanoparticles on steel corrosion in 1 M HCl solution was investigated using potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS). Results obtained from both potentiodynamic polarisation and EIS measurements reveal that the magnetite nanoparticle is an effective inhibitor for the corrosion of steel in 1.0 M HCl solution. Polarization data show that magnetite nanoparticles behave as a mixed type inhibitor. The inhibition efficiencies obtained from potentiodynamic polarization and EIS methods are in good agreement.
Highlights
Synthesis of new bioactive materials from renewable natural resources has become a rapidly growing area to replace or partially replace environmentally and energy unfavorable toxic materials derived from petrochemicals
The produced acid chloride reacted with EC in the presence of acid acceptor based on triethylamie to produce 2-hydroxy-3-leveopimaric maleic anhydride propyl chloride ester (LPME)
The produced chloride ester of LLPME was reacted with Transmittance electron microscopies (TEM) to produce bis-N-(3-levopimaric maleic acid adduct-2-hydroxy) propyl-triethyl ammonium chloride (LPMQA) as cationic surfactant
Summary
Synthesis of new bioactive materials from renewable natural resources has become a rapidly growing area to replace or partially replace environmentally and energy unfavorable toxic materials derived from petrochemicals. A robust inexhaustible raw material from pine tree is mixture of compounds in which 90% is acidic called resin acids with the formula of C19H29COOH and the last 10% is neutral compounds. Highly active surface modified cheap rosin materials can be advantageous in the production of new materials. This is attributed to its cheap price and low toxicity when compared to the petroleum-based materials. Nanotechnology has been employed to reduce the impact of corrosive environments through the alternation of the steel/electrolyte interface (e.g., formation of Nano-composite thin film coatings on steel). Magnetite is one of the most promising nanoparticles employed in anticorrosion coatings [23,24]
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