Tao Jing, Liu Yuanfa, Li Minghan, Li Zheng, Zhang Yihang, Song Xuecui, Yang Qiang, Guan Fucheng, Guo Jing
College of Textile and Material Engineering, Dalian Polytechnic University, Dalian, 116034, P. R. China.
Fiber Composite Material Innovation Center of Liaoning Province, Dalian, 116034, P. R. China.
Small. 2024 Aug;20(32):e2304894. doi: 10.1002/smll.202304894. Epub 2024 Mar 28.
Superhydrophobic fabrics with multiple functions have become a research hotspot. However, it is challenging to make self-healing mechanically robust and eco-friendly superhydrophobic fabrics, which are limited by complex fabrication processes and excessive use of environmentally unfriendly solvents during fabrication. Herein, inspired by the secretion of a waxy substance from the surface of lotus leaves to restore water repellency, self-healing superhydrophobic composite fabrics (as-synthesized PA66/6-PET@Tico) are obtained by constructing a papillary TiO and tentacle-like fluorinated acrylate polymer (FCB015) coating on polyester-nylon composite fabrics using two-step hydrothermal method. The result indicates that PA66/6-PET@Tico with hierarchical micro/nanostructure exhibits excellent superhydrophobic and self-healing properties. Compared with FCB015 coated fabric, the contact angles (CA) of water and soybean oil rise to 172.2° and 166.8° from 137.4° and 98.8°, respectively. After mechanical abrasion, PA66/6-PET@Tico recovers a water contact angle (WCA) of 165.6° at room temperature. The WCA remains higher than 155° after 18 h of chemical corrosion. Furthermore, the bacterial inhibition rates of PA66/6-PET@Tico for Staphylococcus Aureus and Escherichia Coli are 99.90 and 98.38%, respectively. In this work, a new idea is proposed for designing a simple and effective self-healing superhydrophobic coating, expecting to promote the large-scale industrial production and application of functional surfaces.
具有多种功能的超疏水织物已成为研究热点。然而，制备具有自修复功能、机械坚固且环保的超疏水织物具有挑战性，这受到复杂制造工艺以及制造过程中过度使用环境不友好溶剂的限制。在此，受荷叶表面分泌蜡质物质以恢复疏水性的启发，通过两步水热法在聚酯 - 尼龙复合织物上构建乳头状TiO和触手状含氟丙烯酸酯聚合物（FCB015）涂层，获得了自修复超疏水复合织物（合成的PA66/6 - PET@Tico）。结果表明，具有分级微/纳米结构的PA66/6 - PET@Tico表现出优异的超疏水和自修复性能。与FCB015涂层织物相比，水和大豆油的接触角（CA）分别从137.4°和98.8°升至172.2°和166.8°。机械磨损后，PA66/6 - PET@Tico在室温下恢复的水接触角（WCA）为165.6°。化学腐蚀18小时后，WCA仍高于155°。此外，PA66/6 - PET@Tico对金黄色葡萄球菌和大肠杆菌的抑菌率分别为99.90%和98.38%。在这项工作中，提出了一种设计简单有效的自修复超疏水涂层的新思路，期望推动功能表面的大规模工业生产和应用。
