It is an urgent task to develop environmentally friendly and flame retardant durable oil–water separation materials. A green TA/B@PDA coating derived from bio‐based materials such as tannic acid (TA), borax (B), and polydopamine (PDA) is deposited on cotton fabric through facile dip‐coating method and step‐by‐step assembly method. A series of methods are used to characterize the as‐prepared cotton fabric. PDA provides a reactive interface, while n‐dodecyl mercaptan enhances the hydrophobicity of the surface with a water contact angle (WCA) and shedding angle (SA) of 153.3° ± 1.2° and 9° ± 0.8°, respectively. The as‐prepared fabric exhibits outstanding oil/water separation efficiency (>98.5%) for various types of oil, and wear resistivity, washability, and reusability. Meanwhile, combustion test and limit oxygen index (LOI) test show that the modified fabric has excellent flame retardant performance. The cone calorimeter test (CCT) indicates that compared with the pristine cotton fabric, the peak heat release rate (PHRR) and total heat release (THR) of the TA/B@PDA cotton is decreased by 50% and 32%, respectively. Through the analysis of char residues, the flame retardant mechanism is studied. This method provides a general green way for the construction of superhydrophobic surfaces, and can be further applied to the broad fields of durable oil–water separation.

中文翻译：

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一种基于生物的超疏水阻燃棉织物的制备，用于油水分离

开发环保，阻燃的耐油水分离材料是当务之急。通过简便的浸涂方法和分步组装的方法，将绿色的TA / B @ PDA涂层衍生自单宁酸（TA），硼砂（B）和聚多巴胺（PDA）等生物基材料，并将其沉积在棉织物上方法。使用了一系列方法来表征所制备的棉织物。PDA提供了一种反应性界面，而正十二烷基硫醇的水接触角（WCA）和脱落角（SA）分别为153.3°±1.2°和9°±0.8°，从而增强了表面的疏水性。所制备的织物对各种类型的油均具有出色的油/水分离效率（> 98.5％），并具有耐磨性，耐洗性和可重复使用性。同时，燃烧测试和极限氧指数（LOI）测试表明，改性织物具有优异的阻燃性能。锥形量热仪测试（CCT）表明，与原始棉织物相比，TA / B @ PDA棉的峰值放热率（PHRR）和总放热（THR）分别降低了50％和32％。通过分析炭残留物，研究了其阻燃机理。这种方法为构造超疏水表面提供了一种通用的绿色方法，并且可以进一步应用于耐油水分离的广泛领域。分别。通过分析炭残留物，研究了其阻燃机理。这种方法为构造超疏水表面提供了一种通用的绿色方法，并且可以进一步应用于耐油水分离的广泛领域。分别。通过分析炭残留物，研究了其阻燃机理。这种方法为构造超疏水表面提供了一种通用的绿色方法，并且可以进一步应用于耐油水分离的广泛领域。