Faculty of Materials Science and Engineering , South China University of Technology , Guangzhou 510640 , P. R. China.
ACS Appl Mater Interfaces. 2019 Mar 27;11(12):11947-11953. doi: 10.1021/acsami.9b01247. Epub 2019 Mar 15.
Polymer resins are critical for marine anti-biofouling coatings. In this study, degradable poly(ester- co-acrylate) with antifoulant pendant groups has been prepared by the radical ring-opening polymerization of 2-methylene-1,3-dioxepane, methyl methacrylate, and N-methacryloyloxy methyl benzoisothiazolinone. Such a polymer containing main-chain esters can hydrolytically and enzymatically degrade. Both degradation rates increase with main-chain ester content. Moreover, since the antifoulant groups are chemically grafted to the degradable main chain, their release can be controlled by the degradation besides the hydrolysis of side groups. Our study shows that the copolymer coating is efficient in inhibiting the accumulation of marine bacterial biofilm of Pseudomonas sp. and diatom Navicular incerta. Marine field test reveals that the copolymer has excellent efficiency in preventing biofouling for more than 6 months.
聚合物树脂对海洋防污涂料至关重要。在这项研究中，通过 2-亚甲基-1,3-二氧戊环、甲基丙烯酸甲酯和 N-甲基丙烯酰氧基甲基苯并异噻唑啉酮的自由基开环聚合，制备了带有防污侧基的可降解聚酯-共丙烯酸酯。这种含有主链酯的聚合物可以通过水解和酶解进行降解。两种降解速率均随主链酯含量的增加而增加。此外，由于防污基团通过化学键接枝到可降解的主链上，除了侧基的水解外，它们的释放也可以通过降解来控制。我们的研究表明，共聚物涂层能有效抑制海洋假单胞菌和海洋硅藻 Navicular incerta 细菌生物膜的积累。海洋现场试验表明，该共聚物在防止生物污损方面的效果超过 6 个月。
