Department of Coatings and Polymeric, North Dakota State University, Fargo, North Dakota 58108, United States.
Graduate School of Engineering, Department of Polymer Chemistry, Kyoto University, Sakyo Ward, Kyoto 606-8501, Japan.
ACS Appl Mater Interfaces. 2022 Aug 17;14(32):37229-37247. doi: 10.1021/acsami.2c10983. Epub 2022 Aug 8.
Combining amphiphilic fouling-release (FR) coatings with the surface-active nature of amphiphilic additives can improve the antifouling/fouling-release (AF/FR) properties needed to offer broad-spectrum resistance to marine biofoulants. This work is focused on further tuning the amphiphilic character of a previously developed amphiphilic siloxane-polyurethane (SiPU) coating by varying the amount of PDMS and PEG in the base system. Furthermore, surface-modifying amphiphilic additives (SMAAs) were incorporated into these amphiphilic FR SiPU coatings in varying amounts. ATR-FTIR, contact angle and surface energy measurements, and AFM were performed to assess changes in surface composition, wettability, and morphology. AF/FR properties were evaluated using laboratory biological assays involving , , , , and . The surfaces of these coatings varied significantly upon changes in PDMS and PEG content in the coating matrix, as well as with changes in SMAA incorporation. AF/FR properties were also significantly changed, with formulations containing the highest amounts of SMAA showing very high removal properties compared to other experimental formulations, in some cases better than that of commercial standard FR coatings.
将具有两亲性防污释放（FR）涂层与两亲性添加剂的表面活性结合起来，可以改善抗海洋生物污垢所需的防污/防污释放（AF/FR）性能，从而提供广谱抗性。这项工作专注于通过改变基础体系中 PDMS 和 PEG 的量来进一步调整先前开发的两亲性硅氧烷-聚氨酯（SiPU）涂层的两亲性。此外，还将表面改性两亲性添加剂（SMAAs）以不同的量掺入这些两亲性 FR SiPU 涂层中。通过 ATR-FTIR、接触角和表面能测量以及 AFM 来评估表面组成、润湿性和形态的变化。使用涉及 、 、 、 和 的实验室生物测定来评估 AF/FR 性能。这些涂层的表面在涂层基质中 PDMS 和 PEG 含量的变化以及 SMAAs 掺入量的变化时会发生显著变化。AF/FR 性能也发生了显著变化，与其他实验配方相比，含有最高量 SMAAs 的配方表现出非常高的去除性能，在某些情况下甚至优于商业标准 FR 涂层。
