Switchable antifouling coatings and uses thereof
| DWPI Title: Antifouling coating for surface e.g. aluminum, comprises layer comprising siloxane polymer, and layer comprising onium cation attached to polymer, and is configured to release cation upon thermal or photochemical treatment |
| Abstract: The present invention relates to antifouling coatings capable of being switched by using heat or ultraviolet light. Prior to switching, the coating includes an onium cation component having antimicrobial and antibacterial properties. Upon switching, the coating is converted to a conjugated polymer state, and the cationic component is released with any adsorbed biofilm layer. Thus, the coatings herein have switchable and releasable properties. Methods of making and using such coatings are also described. |
| Use: Antifouling coating is used for coating surface or substrate e.g. aluminum, stainless steel, galvanized steel, iron, glass, plastics, fiberglass, polymers, filters, and membranes and controlling biofouling from any source e.g. bacteria, algal spores, single cell diatoms, barnacle cyprids, tubeworms, parasites, and marine fungi, plants, algae, polysaccharides or fibronectin, etc. Uses include but are not limited to ship hulls, boat hulls, submarine hulls, snorkels, tanks, torpedoes, transponders, turbines, valves, water pipes medical devices, catheters, biosensors, etc. |
| Advantage: The antifouling coating has improved releasable and switchable properties. The coatings can be switched by exposure to heat or ultraviolet light. |
| Novelty: An antifouling coating comprises a layer (l1) comprising a primer or a siloxane polymer, and a layer (l2) comprising an onium cation covalently attached to a α -carbon of a switchable polymer. The coating is configured to release the cation upon thermal or photochemical treatment. |
| Filed: 8/8/2014 |
| Application Number: US14455702A |
| Tech ID: SD 13195.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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