Stimuli-responsive materials with switchable wettability have promising practical applications in oil/water separation. A novel CO₂-responsive cotton fabric for controlled oil/water separation was fabricated based on mussel-inspired reaction and polymerized with 2-(dimethylamino)ethyl methacrylate (DMAEMA). As expected, the modified fabric exhibited switchable hydrophilicity and hydrophobicity after CO₂/N₂ alternation, and it could be used for gravity-driven CO₂-controlled oil/water separation. Water was selectively penetrated through the fabric and separated from oil after treating by CO₂. A reversed wettability could be generated through simply treated with N₂. It is expected that the as-prepared fabrics could be applied in smart oil/water separation due to the attractive properties of CO₂-switchable system.

中文翻译：

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具有CO 2的智能棉织物-响应性可湿性，可控制油/水分离

具有可切换润湿性的刺激响应材料在油/水分离中具有广阔的实际应用前景。基于贻贝激发的反应，制备了一种新型的CO ₂响应型棉织物，用于控制油/水分离，并与甲基丙烯酸2-（二甲基氨基）乙酯（DMAEMA）聚合。如所预期的，在CO ₂ / N ₂交替之后，改性织物表现出可切换的亲水性和疏水性，并且可以用于重力驱动的CO ₂控制的油/水分离。在通过CO ₂处理之后，水被选择性地渗透通过织物并与油分离。通过简单地用N ₂处理可以产生相反的润湿性。预期由于CO _2可切换系统的吸引力，所制备的织物可用于智能油/水分离。