Sun Ye, Ouyang Bo, Rawat Rajdeep Singh, Chen Zhong
School of Material Science and Engineering Nanyang Technological University Singapore 639798 Singapore.
Natural Science and Science Education National Institute of Education Nanyang Technological University Singapore 637616 Singapore.
Glob Chall. 2020 Mar 3;4(7):1900095. doi: 10.1002/gch2.201900095. eCollection 2020 Jul.
Fabrics with special wettability have drawn growing attention in recent years in the area of oil-water separation due to their low cost, good flexibility, and ease of handling. However, an efficient and fast method to enable the required wetting state on fabrics still remains a challenge. In this work, a one-step, rapid, and chemical-free hydrogen plasma treatment is reported to prepare a superhydrophobic and oleophilic polyester fabric. The as-prepared fabrics display a static water contact angle of 153.2° with excellent oil-water separation capability. The mechanism of surface transformation is discussed through chemical analyses, which indicate a significant removal of carboxyl group from the pristine hydrophilic surface. This developed method is envisaged to be used for on-demand large-scale production of materials for emergency oil cleanup through either separation or selective adsorption.
近年来，具有特殊润湿性的织物因其成本低、柔韧性好且易于处理，在油水分离领域受到越来越多的关注。然而，在织物上实现所需润湿状态的高效快速方法仍然是一个挑战。在这项工作中，报道了一种一步、快速且无化学物质的氢等离子体处理方法，用于制备超疏水且亲油的聚酯织物。所制备的织物具有153.2°的静态水接触角，具备优异的油水分离能力。通过化学分析讨论了表面转变的机制，结果表明原始亲水表面的羧基被大量去除。预计这种开发的方法可用于通过分离或选择性吸附按需大规模生产用于紧急油污清理的材料。
