Abstract In this study, a large-scale roll-to-roll initiated chemical vapor deposition (iCVD) system was developed to allow for coating superhydrophobic thin films on flexible substrates. Poly(hexafluorobutyl acrylate), which possesses a short fluorinated side-chain, was chosen as the hydrophobic finish material, while a commercial porous bamboo fabric was used as the flexible substrate. After iCVD coating, bamboo surface, which is superhydrophilic by its nature, transformed into a superhydrophobic with a water contact angle of 156° without changing its porous and flexible structure. Similar hydrophobic properties were observed against various daily liquids. Complete coverage of as-deposited films on both sides of bamboo surfaces was observed at very high roll speeds up to 225 mm/min, which allow coatings on 20 m2 flexible substrates in a single run. Large scale contact angle and chemical uniformity of coatings on fabric surfaces were evaluated using contact angle and XPS analyses.

中文翻译：

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卷对卷引发的超疏水薄膜在大规模柔性基板上的化学气相沉积

摘要 在这项研究中，开发了一种大规模的卷对卷启动化学气相沉积 (iCVD) 系统，以在柔性基板上涂覆超疏水薄膜。选择具有短氟化侧链的聚（丙烯酸六氟丁酯）作为疏水饰面材料，而使用商业多孔竹织物作为柔性基材。经过iCVD涂层后，竹材表面原本具有超亲水性，在不改变其多孔柔性结构的情况下，转变为具有156°水接触角的超疏水性。对各种日常液体观察到类似的疏水特性。在高达 225 毫米/分钟的非常高的辊速下观察到竹子表面两侧的沉积薄膜完全覆盖，这允许在单次运行中在 20 平方米的柔性基材上进行涂层。使用接触角和 XPS 分析评估织物表面涂层的大规模接触角和化学均匀性。