Speaker
Description
Recent studies have raised environmental concerns about conventional metal corrosion inhibitors because of their poor ecotoxicity, limited biodegradability, groundwater and soil contamination, and eutrophication. Therefore, the focus of the scientific interest is oriented toward eco-friendly, naturally derived materials as alternatives to traditional inhibitors. Among these renewable substances, materials that show promising anti-corrosion properties are natural polymers, such as polysaccharides, natural gums, and lignin-based substances. The inhibition effectiveness of natural polymers for metals depends mainly on molecular architecture and content of functional groups (e.g., hydroxyl, carboxyl, and amino groups), concentration in the medium, substrate type, corrosive environment, and exposure time. A protective layer on the metal surface, formed upon polymer adsorption, further restricts aggressive agents' access to the metal. Despite these advantages, natural polymers often face limited thermal stability, poor desorption resistance, and inconsistent performance as corrosion inhibitors. Therefore, to optimize performance and expand their practical applications as sustainable corrosion-control materials, further studies should focus on polymers' chemical modification, synergistic formulations, and thorough analysis of inhibition performance under different conditions. This study presents an overview of the inhibitory performance of several natural polymers and the opportunities for their industrial applications.
Key words: natural polymers, metal corrosion, corrosion inhibitors, sustainable inhibitors
| Conference Topics | Green Engineering |
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