Department of Resins and Additives, Institute for Color Science and Technology, Tehran, Iran.
Department of Resins and Additives, Institute for Color Science and Technology, Tehran, Iran.
Int J Biol Macromol. 2023 Aug 1;245:125508. doi: 10.1016/j.ijbiomac.2023.125508. Epub 2023 Jun 24.
In this study, a series of novel hydrophobic/hydrophilic hybrid (HHH) coatings with the feature of preventing the fouling phenomenon was fabricated based on polydimethylsiloxane (PDMS), as matrix and two hydrophilic polymers: chitosan and sodium polyacrylate, as dispersed phases. Antibacterial activity, pseudo-barnacle adhesion strength, surface free energy, water contact angle, and water absorption were performed for all samples. Evaluating field immersion of the samples was performed in the natural seawater. The results showed that the dispersed phase containing PDMS coatings showed simultaneously both of antibacterial activity and foul release behavior. Among the samples, the PCs4 coating containing 4 wt% Cs indicated the lowest pseudo barnacle adhesion strength (0.04 MPa), the lowest surface free energy (18.94 mN/m), the highest water contact angle (116.05°), and the percentage of fouling organisms 9.8 % after 30 days immersion. The HHH coatings can be considered as novel eco-friendly antifouling/foul release coatings for aquaculture applications.
在这项研究中，基于聚二甲基硅氧烷（PDMS）作为基质和两种亲水聚合物：壳聚糖和聚丙烯酸钠作为分散相，制备了一系列具有防止污垢现象特征的新型疏水/亲水杂化（HHH）涂层。对所有样品进行了抗菌活性、假藤壶附着强度、表面自由能、水接触角和吸水率的测试。在自然海水中对样品进行了野外浸泡评估。结果表明，含有 PDMS 的分散相涂层同时具有抗菌活性和防污释放性能。在这些样品中，含有 4wt%Cs 的 PCs4 涂层表现出最低的假藤壶附着强度（0.04MPa）、最低的表面自由能（18.94mN/m）、最高的水接触角（116.05°）以及 30 天后 9.8%的污损生物百分比。HHH 涂层可被视为用于水产养殖应用的新型环保型防污/防污释放涂层。
