Department of Chemistry, Chungbuk National University, Chungbuk 28644, Republic of Korea.
Biomacromolecules. 2020 Dec 14;21(12):5086-5092. doi: 10.1021/acs.biomac.0c01248. Epub 2020 Nov 17.
We report a facile approach for the fabrication of a marine antifouling coating using the red algae-derived polysaccharide, carrageenan (CAR). Because CAR is hydrophilic and negatively charged, we hypothesized that it would form strong hydration layers upon adsorption onto solid surfaces, thereby exhibiting marine antifouling properties. Although various types of CAR can be used for marine antifouling, a universally applicable coating method has not yet been developed; thus, a systematic study on the marine antifouling property of CAR coating is lacking. Here, we fabricated a versatile CAR coating via Zr-mediated multiple cross-linking reactions between the sulfate groups of CAR and metal ions and successfully deposited κ-, ι-, and λ-CAR onto solid surfaces. Specifically, λ-CAR showed superior marine antifouling performance, as evidenced by the results of the marine diatom adhesion assays.
我们报告了一种使用红藻衍生多糖卡拉胶（CAR）制备海洋防污涂层的简便方法。由于 CAR 具有亲水性和负电性，我们假设它在吸附到固体表面时会形成强水合层，从而表现出海洋防污性能。尽管可以使用各种类型的 CAR 来进行海洋防污，但尚未开发出通用的涂覆方法；因此，对 CAR 涂层的海洋防污性能缺乏系统研究。在这里，我们通过 CAR 中的硫酸根基团与金属离子之间的 Zr 介导的多重交联反应制备了一种通用的 CAR 涂层，并成功地将 κ-、ι-和 λ-CAR 沉积到固体表面上。具体而言，λ-CAR 的海洋硅藻附着试验结果表明其具有优异的海洋防污性能。
