Mohamed M E, Abd-El-Nabey B A
Faculty of Science, Chemistry Department, Alexandria University, P.O. Box 426, Alexandria 21321, Egypt E-mail:
Water Sci Technol. 2021 Jan;83(1):90-99. doi: 10.2166/wst.2020.562.
In the present work, dopamine is self-polymerized on cotton fabric by a simple deep-coating method and followed by modification with an ethanolic solution of palmitic acid: a superhydrophobic/oleophilic cotton fabric was obtained. The as-prepared cotton fabric exhibits a superhydrophobic character with a water contact angle of 157. The absorption capacity of as-prepared superhydrophobic/oleophilic cotton fabric in n-hexane, petroleum ether, and silicone oil was determined. The results show that silicone oil has the highest absorption capacity while n-hexane has the lowest value. The absorption capacity is nearly constant even after ten cycles, indicating the efficient recyclability of the as-prepared superhydrophobic/oleophilic cotton fabric for oil separation. The as-prepared superhydrophobic/oleophilic cotton fabric shows excellent separation efficiency, high flux rate, and excellent chemical and mechanical stability.
在本工作中，多巴胺通过简单的深层涂层法在棉织物上进行自聚合，随后用棕榈酸乙醇溶液进行改性：由此获得了一种超疏水/亲油的棉织物。所制备的棉织物表现出超疏水特性，水接触角为157°。测定了所制备的超疏水/亲油棉织物在正己烷、石油醚和硅油中的吸收容量。结果表明，硅油的吸收容量最高，而正己烷的值最低。即使经过十次循环，吸收容量仍几乎保持不变，这表明所制备的超疏水/亲油棉织物用于油分离具有高效的可回收性。所制备的超疏水/亲油棉织物表现出优异的分离效率、高通量率以及出色的化学和机械稳定性。
