Preparation and Antifouling Study of Capsaicin-Modified Coatings
High-density polyethylene(HDPE)is commonly utilized in the pipes constituting the primary framework of marine aquaculture cages,which are prone to attachment by marine shellfish.Capsaicin was employed as a stimulant to deter marine organisms from adhering to the coated surface.The printer was used to apply ink and capsaicin onto the drawing surface in a predetermined dot matrix pattern,ensuring that the distance between dots is smaller than the arm span of barnacles.By applying hydrophobic tung oil as a protective layer on top of three layers of drawings wrapped successively onto the HDPE surface,gradual shedding occurs in the marine environment,thereby achieving an antifouling effect.The results showed that the spacing between points within the pattern was less than that between arms of shellfish such as barnacles in a marine setting.Successful printing of capsaicin on the drawing surface was confirmed through infrared and EDS tests.The contact angle and antifouling tests validated that capsaicin-modified coating exhibited certain efficacy in inhibiting attachment by marine organisms.
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