科研之友
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摘要
Marine biofouling is a sticky problem.Development of environment-friendly anti-biofouling systems is a challenge.Here, we present a novel polyurethane with poly(ε-caprolactone) (PCL) segments in the main chain and poly(triisopropylsilyl acrylate) (PTIPSA) side chains, where the former are able to degrade in marine environment due to the attack of seawater and microorganisms whereas the latter have been commercially used in self-polishing coating.The self-polishing rate of the surface constructed by the polyurethane determined by degradation and hydrolysis can be regulated by varying its composition.Moreover, the introduction of the biodegradable PCL into the silyl acrylate polymers can also improve the dissolution of the hydrolytic moieties without the help of shear force, which facilitates the anti-biofouling in static state.We have examined the enzymatic and hydrolytic degradation of the polymers in seawater and the anti-biofouling by marine field tests.Our studies show that the degradation and hydrolysis of the polyurethane in seawater can be well controlled.Marine field tests reveal that the polyurethane has good antifouling ability due to its self-renewing property.Moreover, the polyurethane can serve as a carrier and release system of organic antifoulant, and the combined system exhibits much higher antifouling performance even in a static marine environment.Such systems are promising in marine anti-biofouling.
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