Marine anti-fouling polyurethane-fluorinated polysiloxane/microcapsule/metal organic framework bionic coating for broad-spectrum and long-lasting protection

IF 11.2 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science & Technology Pub Date : 2025-07-13 DOI:10.1016/j.jmst.2025.06.022

Jie Liu, Mingkang Rao, Fu Xia, Bo Jia, Nan Zheng, Hao Jiang, Zheng Li, Jiufu Lu, Wenge Li, Guoqing Wang

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引用次数: 0

Abstract

Bu@PGMA_m/GO microcapsules (MCs) with compact multi-shell structure, the metal-organic framework [Zn(MIBA)₂]_n, and high-strength, high-adhesion polyurethane-fluorinated polysiloxane (PU-^FPDMS) are successfully synthesized. By alternately spin-coating PU-^FPDMS/MCs mixture and PU-^FPDMS/ [Zn(MIBA)₂]_n mixture in sequence, a PU-^FPDMS/MCs/[Zn(MIBA)₂]_n marine anti-fouling coating with coral-like morphology is fabricated. Herein, the reactive oxygen species generated via the photocatalytic reaction of [Zn(MIBA)₂]_n exhibit inhibitory effects on biological organisms. The static contact angle and sliding angle of the PU-^FPDMS/MCs/[Zn(MIBA)₂]_n coating are 157.8° and 5.1°, respectively. After being immersed in fluorescently-labeled bovine serum albumin solution for 24 h, the coating remains free of protein coverage. The coating exhibits a 100% antibacterial rate against Escherichia coli, Staphylococcus aureus, and Pseudomonas aeruginosa. After being immersed in algal suspensions for 30 days, the coating exhibits the lowest adhesion of Chlorella and Nitzschia closterium, with coverage percentages of 4.7% and 4.0%, respectively. After 5 months of marine field test, the coating still remains free of any marine fouling coverage. The coating achieves broad-spectrum and long-lasting anti-fouling performance through the synergistic effects of the robust low-surface-energy PU-^FPDMS matrix, steady-state release of Bu, photocatalysis of [Zn(MIBA)₂]_n, and the bionic surface. The PU-^FPDMS/MCs/[Zn(MIBA)₂]_n coating is anticipated to find extensive applications in anti-fouling, anti-icing, drag reduction, self-cleaning, and antibacterial domains due to its unique properties.

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船用防污聚氨酯-氟化聚硅氧烷/微胶囊/金属有机骨架仿生涂层，广谱持久防护

成功合成了具有致密多壳结构的氧化石墨烯微胶囊（Bu@PGMAm/GO）、金属有机骨架[Zn(MIBA)2]n和高强高粘接聚氨酯-氟化聚硅氧烷（PU-FPDMS）。通过依次旋转涂覆PU-FPDMS/MCs和PU-FPDMS/ [Zn(MIBA)2]n混合物，制备了具有珊瑚状形貌的PU-FPDMS/MCs/[Zn(MIBA)2]n海洋防污涂料。本文中，通过[Zn(MIBA)2]n光催化反应产生的活性氧对生物有机体表现出抑制作用。PU-FPDMS/MCs/[Zn(MIBA)2]n涂层的静态接触角和滑动角分别为157.8°和5.1°。在荧光标记的牛血清白蛋白溶液中浸泡24小时后，涂层保持无蛋白质覆盖。该涂层对大肠杆菌、金黄色葡萄球菌和铜绿假单胞菌的抗菌率为100%。在藻悬浮液中浸泡30 d后，涂层对小球藻和硝氏菌的粘附率最低，分别为4.7%和4.0%。经过5个月的海上现场测试，涂层仍然没有任何海洋污垢覆盖。该涂层通过坚固的低表面能PU-FPDMS基体、稳态释放Bu、[Zn(MIBA)2]n光催化和仿生表面的协同作用，实现了广谱持久的防污性能。PU-FPDMS/MCs/[Zn(MIBA)2]n涂层由于其独特的性能，有望在防污、防冰、减阻、自清洁和抗菌等领域得到广泛的应用。

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来源期刊

Journal of Materials Science & Technology 工程技术-材料科学：综合

CiteScore

20.00

自引率

11.00%

发文量

995

审稿时长

13 days

期刊介绍： Journal of Materials Science & Technology strives to promote global collaboration in the field of materials science and technology. It primarily publishes original research papers, invited review articles, letters, research notes, and summaries of scientific achievements. The journal covers a wide range of materials science and technology topics, including metallic materials, inorganic nonmetallic materials, and composite materials.