超亲水性
材料科学
接触角
乳状液
化学工程
生物污染
聚氨酯
纳米复合材料
乙二醇
结垢
润湿
复合材料
膜
化学
生物化学
工程类
作者
Mauliady Satria,Tawfik A. Saleh
标识
DOI:10.1016/j.molliq.2022.120341
摘要
Not only for scientific research but study for continuous oil/water separation is also essential for practical application, especially in the oil industry. Cleaning oily wastewater and oil-spill pollution nowadays have taken much attention due to the rapid development of technology worldwide. Material that exhibits remarkable superwettability toward oil and water is considered a promising candidate, especially for superhydrophilic/superoleophobic material due to its water-wetting behaviour and anti-oil-fouling properties. In this work, the commercial polyurethane foam (PUF) was coated with zinc nanoparticles (Zn-NPs) by using a facile dip-coating method. In addition, PUF-Zn NPs were modified with malic acid (MA) and tetra ethylene glycol (TEG) to achieve superhydrophilicity and formed PUF-Zn-MA-TEG nanocomposite. This material exhibits excellent underwater oil contact angle (OCA ∼ 158°), and water contact angle (WCA ∼ 0°). The water absorption capacity was tested with the result as much as 31.5 g/g from its original weight. Surprisingly, the immiscible oil/water mixture and complicated oil/water emulsion can also be separated with high efficiency (up to 99.5%) and water permeate flux (up to 7000 L m−2 h−1). Based on its long-term performance and high mechanical stability and durability, the developed nanocomposite could be used in a broad range of industrial applications.
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