New paint formulation based on vegetable oil-based polymers containing Cu (II), and Co (II), and study their uses as antimicrobial and anticorrosive binders for coating applications

Abstract

Abstract Linoleic Fatty Acid based poly(ester amide) containing Copper and Cobalt as anticorrosive and antimicrobial binders for protective paints were prepared. The prepared polyesteramide resins were confirmed spectroscopically and investigated by thermogravimetric analysis, Energy Dispersive X-ray and Scanning Electron Microscopy studies. Different substrates either glass or mild steel strips were coated by using the prepared binders with a thickness of 120 +/- 5 µm using a brush. Using international testing standards, the physico-mechanical properties and chemical resistance of the resins were tested to evaluate their coating performance. The obtained results of mechanical properties of the dry coated films hass been enhanced such as Scratch Hardness, and cross-cutt adhesion however the Alkali resistance of the dry coated films has been also improved fron < 15 dys to be > 30 days and Acid resistance the resistance also, incresed from 20 to > 30 days .Furthermore, the resins were assessed as anti-corrosive and antibacterial single coatings by combining them with primer compositions. The results illustrated that Copper and Cobalt-incorporated linoleic fatty acids, within the resin structure, enhanced the antibacterial activity and has been affected on the primer coating formulation which improved their biological activity comparing with sample blank. The observed results of corrosion resistance for the painted steel films based on Copper and Cobalt-incorporated linoleic fatty acids, such as degree of rusting, blistering, and scribe failure confirmed that the prepared resins can be using as anticorrosive binder for steel protection.