Fabrication of nano calcium fluoride impregnated organic polyester alkyd coating for anticorrosive and antibacterial applications

Abstract

The advent of organic polyester alkyd resin has revolutionized the coating industry due to its good adherence to any substrate, high gloss, and greater drying speed. This work deals with the characterization of nano calcium fluoride (CaF2 Nps) incorporated polyester alkyd coating for efficient multifunctional coating applications. The CaF2 Nps are prepared by employing a facile co‐precipitation process. The prepared particles are characterized using X‐ray diffraction analysis (XRD) and scanning electron microscopy (SEM) to analyze their size and morphology. By employing the ball milling technique, the CaF2 Nps along with other additives are mixed with alkyd resin to form a coating. The spreading ability, volatile and non‐volatile content, surface roughness, and coating thickness are evaluated. The minimal inhibitory concentration (MIC) is estimated by the turbidimetric assay method against gram‐negative and gram‐positive bacteria strains. Since these pigments hold very good antibacterial properties, the CaF2 are impregnated in alkyd resin coating, in which CaF2 nanoparticles are used as pigments. To reduce the nosocomial infection spreading in the hospital environment the formulated paint is analyzed for its antibacterial and anticorrosive studies. The current study confirmed CaF2 impregnated organic alkyd resin coating possesses promising comparable properties which would be a good choice for coatings, addressing multifunctional properties.