Polyaniline hybrids in the presence of ionic liquids in acidic medium as an anti- corrosive agent

Title : Polyaniline hybrids in the presence of ionic liquids in acidic medium as an anti- corrosive agent

Abstract:

The corrosion of metallic materials represents a significant challenge in various industries, particularly in the energy and oil sectors, where exposure to aggressive environments accelerates structural degradation. In this study, we investigate the effectiveness of polyaniline (PAni) hybrids modified with ionic liquids (ILs) in an acidic medium as anticorrosive agents. The research is based on formulations combining PAni with carbon nanotubes (CNTs) and graphene dispersed in ILs, aiming to enhance conductivity and corrosion protection in epoxy coatings. The synthesis of the hybrids was carried out by polymerization of aniline in an acidic medium using dodecylbenzenesulfonic acid (DBSA) and imidazolium-based ILs. The materials were characterized using FTIR, XRD, SEM, and TGA, allowing for the evaluation of the morphology and thermal stability of the compounds. Electrochemical impedance spectroscopy (EIS) and gravimetric tests were employed to analyze the anticorrosive efficiency of the hybrids, indicating a significant reduction in the corrosion rate of the metallic substrate. We conclude that modifying PAni with ionic liquids represents a promising strategy for developing advanced coatings, contributing to the protection of metallic structures in aggressive environments.

Biography:

Maria Eduarda Le Senechal an undergraduate student from the Federal University of Rio de Janeiro, the only nanotechnology program in the country, was selected by the governmental agency National Petroleum Agency for a selective student program to conduct research in the field of petroleum, oil, and gas. She joined the corrosion inhibition research team led by Professor Dr. Bluma Gunther Soares, a renowned expert in the field with over 300 published articles.