Department of Mechanical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea.
Department of Biological Sciences, Kongju National University, Gongju, 314-701, South Korea.
Colloids Surf B Biointerfaces. 2021 Nov;207:112003. doi: 10.1016/j.colsurfb.2021.112003. Epub 2021 Jul 26.
Marine biofouling of ship hulls and ocean structures causes enormous economic losses due to increased frictional drag. Thus, efforts have been exerted worldwide to eliminate biofouling. In addition, a strong demand exists for the development of a cost-effective and eco-friendly anti-biofouling coating technology. Thus, erucamide-polydimethylsiloxane (EP) coating is proposed in this study. EP exhibits a hydrophobic surface as the erucamide content and drag reduction effect increase. In this study, the drag reduction effect of the EP 2.5 is better than that of glass and polydimethylsiloxane (PDMS) surfaces. Moreover, the proposed EP coatings are observed to prevent the biofouling induced by bacteria (E. coli) and brown algae (Cladosiphon sp.). In addition, through a marine field test, the anti-biofouling effect of the EP surface is found to be better than the previously studied oleamide-PDMS (OP) surface. In the marine field test, the EP 2.5 demonstrates superior anti-biofouling performance for 5.5 months under real marine environment. The proposed eco-friendly EP coating method could be applicable to marine vehicles that require effective drag reduction and anti-biofouling properties.
船舶外壳和海洋结构物的海洋生物附着会导致巨大的经济损失，因为这会增加摩擦阻力。因此，全世界都在努力消除生物附着。此外，人们强烈要求开发一种具有成本效益和环保效益的防生物附着涂层技术。因此，本研究提出了芥酰胺-聚二甲基硅氧烷（EP）涂层。随着芥酰胺含量和减阻效果的增加，EP 表现出疏水性表面。在这项研究中，EP2.5 的减阻效果优于玻璃和聚二甲基硅氧烷（PDMS）表面。此外，所提出的 EP 涂层被观察到可以防止细菌（大肠杆菌）和褐藻（Cladosiphon sp.）引起的生物附着。此外，通过海洋现场试验，发现 EP 表面的防生物附着效果优于先前研究的油酰胺-PDMS（OP）表面。在海洋现场试验中，EP2.5 在真实海洋环境下表现出优越的 5.5 个月的防生物附着性能。所提出的环保型 EP 涂层方法可适用于需要有效减阻和防生物附着性能的海洋车辆。
