Guan Yu, Chen Rongrong, Sun Gaohui, Liu Qi, Liu Jingyuan, Yu Jing, Lin Cunguo, Duan Jizhou, Wang Jun
Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China.
Key Laboratory of Superlight Materials and Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin, 150001, China; Shandong Key Laboratory of Corrosion Science, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.
Micron. 2022 Jan;152:103178. doi: 10.1016/j.micron.2021.103178. Epub 2021 Nov 8.
Anti-diatom testing is a basic method to evaluate the anti-fouling performance of coatings. Many existing results of anti-diatom performances are evaluated based on their attachment number or coverage area, ignoring the influence of the crawling and adhesion behavior of diatoms on the analysis results. Here, a Folium Sennae-like film with multiple structural units was prepared by considering the influence of diatom attachment behaviors on the analysis results. The anti-diatom performances of different parts (divided and called four parts: edge, surface, cross striation, and vertical pattern) on the Folium Sennae-like film were evaluated using the counting and area methods. Obviously, the anti-diatom performance of the Folium Sennae-like film was superior to that of epoxy resin without structure. Under equal areas, the average numbers of diatoms on the cross striation and the vertical pattern were similar to the surface. It was found that the attachment behavior of Halamphora sp. is affected by microstructure units, rather than the combined structure of which the scale is much larger than that of diatoms. Meanwhile, the average attachment area for the unit number of diatoms was calculated. The diatom attachment area without microstructure, surface, cross striation, or vertical pattern was 81.751, 106.950, 73.904, and 84.376 μm, respectively. Moreover, the static and dynamic motion behaviors of Halamphora sp. were studied, and the theory for Halamphora sp. attachment was modeled in three dimensions. The variable morphology of Halamphora sp. lead to inaccurate results for diatom analyses based on the counting and area methods, which is summarized here. This study discusses the evaluation method of coatings by anti-diatom performance, further promoting the research of diatoms in the field of antifouling.
抗硅藻测试是评估涂层防污性能的一种基本方法。许多现有的抗硅藻性能结果是基于硅藻的附着数量或覆盖面积来评估的，而忽略了硅藻的爬行和粘附行为对分析结果的影响。在此，考虑到硅藻附着行为对分析结果的影响，制备了一种具有多个结构单元的决明叶状薄膜。采用计数法和面积法评估了决明叶状薄膜不同部位（分为边缘、表面、横纹和竖纹四个部分）的抗硅藻性能。显然，决明叶状薄膜的抗硅藻性能优于无结构的环氧树脂。在面积相等的情况下，横纹和竖纹上硅藻的平均数量与表面上的相似。研究发现，哈兰弗拉藻的附着行为受微观结构单元的影响，而非尺度远大于硅藻的组合结构的影响。同时，计算了单位数量硅藻的平均附着面积。无微观结构、表面、横纹或竖纹的硅藻附着面积分别为81.751、106.950、73.904和84.376μm。此外，研究了哈兰弗拉藻的静态和动态运动行为，并对哈兰弗拉藻附着的理论进行了三维建模。哈兰弗拉藻形态的变化导致基于计数法和面积法的硅藻分析结果不准确，本文对此进行了总结。本研究探讨了通过抗硅藻性能评估涂层的方法，进一步推动了硅藻在防污领域的研究。
