College of Materials Science and Engineering, Liaoning Technical University, Fuxin123000, P. R. China.
Shandong Weigao Group Medical Polymer Co., Ltd, Weihai264210, P. R. China.
Langmuir. 2023 Jan 17;39(2):870-877. doi: 10.1021/acs.langmuir.2c03060. Epub 2023 Jan 5.
Porous membranes with under-liquid dual superlyophobic properties, which are difficult to achieve because of a thermodynamic contradiction, have attracted considerable interest in the field of switchable oil/water separation. Herein, a bioinspired mesh membrane with alternating hydrophilic and hydrophobic chemical patterns on its surface that endows it with superamphiphilic and under-liquid dual superlyophobic properties is fabricated by a simple liquidus modification process. The as-prepared membrane possesses a combination of under-oil superhydrophobic and under-water superoleophobic characteristics in the absence of external stimuli. Moreover, it can effectively perform the on-demand separation of various oil/water systems, including immiscible oil/water mixtures and oil/water emulsions owing to its under-liquid dual superlyophobic properties.
具有水下双超疏液性能的多孔膜由于热力学上的矛盾而难以实现，因此在可切换油水分离领域引起了相当大的兴趣。在此，通过一种简单的液态改性工艺，制备了一种具有交替亲水性和疏水性化学图案的仿生网膜，赋予其超两亲性和水下双超疏液性能。在没有外部刺激的情况下，所制备的膜具有水下超疏油和水下超疏油的组合特性。此外，由于其水下双超疏液性能，它可以有效地对各种油/水体系，包括不混溶的油/水混合物和油/水乳液进行按需分离。
