Characterization of Kaolinite (Al2Si2O5 (OH)4) and Lansoprazole (C16H14N3F3O2S) for Developing a Structured Coating
In this paper the development of a structured coating consisting of kaolinite (Al2Si2O5 (OH) 4) doped with lansoprazole (C16H14N3F3O2S) and a polymer film with the purpose of protecting metallic materials such as steel is presented. The objective of this work is to characterize kaolinite (Al2Si2O5 (OH) 4) in the raw natural state and heat treated at 350, 400, 450 and 560 ° C by Scanning Electron Microscopy (SEM). Lansoprazole ((C16H14N3F3O2S)) was characterized by electrochemical techniques: polarization curves and electrochemical impedance spectroscopy (EIS).
The results show that the kaolinite in its natural state has amorphous and crystalline particles with impurities. When the heating process mesoporous particles were obtained. Lansoprazole effectiveness at different concentrations (50, 75, 100, 125, 150 and 200 ppm) was evaluated in an aqueous solution of ammonium sulfate ((NH)4 SO4) with sodium chloride (NaCl) at pH 7 and 25 ° C using mild steel.
The results suggest that at 500 °C mesoporous kaolinite particles which may be applied as inhibitory container obtained lansoprazole, gave the better electrochemical response. Moreover lansoprazole has the highest efficiency as a corrosion inhibitor at 125 ppm.