Spray Coating of 2-and 3-D Solid Substrates Using a Sulfated Polysaccharide for Marine Antifouling Applications

Marine antifouling coating using functional polymers has emerged as an important tool to combat marine fouling. Owing to their natural abundance, polysaccharides represent a more sustainable option than synthetic polymers and carrageenan, a sulfated polysaccharide, is identified as a promising candidate for further research based on its excellent marine antifouling properties. However, existing research has only explored the application of carrageenan-based coatings for 2D objects, using techniques such as spin-coating. Here, a spray-coating method is proposed to apply carrageenan-based coatings to the surfaces of 2- and 3-D objects. The coated surfaces exhibit high stability under various chemical/physical stresses and high resistance to protein adsorption and marine diatom adhesion.

Automated summary

Marine antifouling coatings using functional polymers are important for combating marine fouling, and carrageenan, a sulfated polysaccharide, shows promise for further research due to its excellent antifouling properties. A spray-coating method is proposed in this study to apply carrageenan-based coatings to both 2D and 3D objects, resulting in coated surfaces that exhibit high stability and resistance to protein adsorption and marine diatom adhesion.