POLYDOPAMINE HIGH-SPEED COATING METHOD

摘要

According to the present invention, provided is a polydopamine high-speed coating method. The coating method according to the present invention comprises the step of applying a liquid mixture, obtained by the mixing of dopamine and an oxidising agent, onto the substrate surface to be coated, and the present invention provides the advantage that mussel-derived polydopamine for surface processing can be coated at high speed. When the present invention is employed, the variables of pH, dopamine concentration and oxidant are combined such that polydopamine is coated onto the substrate surface at a far faster rate than in the prior art. Further, in the present invention, a dopamine solution and an oxidant solution are separated and are then simultaneously mixed and applied by spraying onto the substrate surface, and consequently a polydopamine layer can be coated at high speed onto the substrate surface even with a single process. Consequently, the present invention can be used to coat the entirety of even surfaces of large surface area in a single process. More particularly, in the present invention, coating efficiency can be increased by mixing and applying an organic solvent mixed in water onto a hydrophobic surface having a water contact angle of at least 90 degrees, or by subjecting the substrate surface to be coated to an oxygen plasma treatment before applying.