Synthesis of Corrosion Inhibitor Based on Polymethyl Methacrylate and Investigation of Inhibition Efficiency on Carbon Steel in a 1 M HCl Medium

The newly composite corrosion inhibitors have been synthesized from monoethanolamine, methyl methacrylate, and phosphoric acid, and their inhibition efficiency was studied. In this case, the mole ratio of the initial substances was maintained at 1:2:2, respectively, and the temperature remained between 35 0C and 40 0C, and 48 hrs. time duration was also been followed. The composition of this obtained composite corrosion inhibitor was studied by spectroscopic techniques and also quantum chemical calculation. In addition, the decomposition rate was determined using DTA and TGA processes. Moreover, the inhibition efficiency of this corrosion inhibitor (MMF-1) was studied using electrochemical measurements at different temperatures and concentrations. Polarization measurements have been carried out, and analysis of anodic and cathode slopes of polarization curves has shown that this inhibitor is a mixed-type inhibitor. Furthermore, the formation of protective films on carbon steel surfaces was confirmed by analyzing scanning electron microscopy and atomic force microscopy. Specially inhibition mechanism of this corrosion inhibitor was widely studied at temperatures of 298, 303, 313, and 323 K and unequivocally confirmed that it follows the Langmuir adsorption isotherm.

Hali tarjima qilinmagan