A slippery oil-repellent hydrogel coating

被引：35

作者：

Lu, Jingwei ^{[1
]}

Zhu, Xiaotao ^{[1
]}

Wang, Bo ^{[1
]}

Liu, Li ^{[1
]}

Song, Yuanming ^{[1
]}

Miao, Xiao ^{[2
]}

Ren, Guina ^{[1
]}

Li, Xiangming ^{[1
]}

机构：

[1] Yantai Univ, Sch Environm & Mat Engn, Yantai 264405, Peoples R China

[2] Liaocheng Univ, Sch Phys Sci & Informat Technol, Shandong Key Lab Opt Commun Sci & Technol, Liaocheng 252000, Shandong, Peoples R China

来源：

CELLULOSE | 2020年 / 27卷 / 05期

关键词：

Antifouling; Superhydrophilic; Slippery; Hydrogel; Oil-repellent; WATER; SURFACES; MESH; WETTABILITY; SEPARATION; FACILE;

D O I：

10.1007/s10570-019-02953-5

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Development of oil-repellent coatings that are anti-fouling with water alone is highly desirable, yet still challenging. Herein, to address this challenge, we fabricate a slippery oil-repellent hydrogel coating that exhibits oil repellency when exposed in the air as well as underwater. In the air, water wets the slippery oil-repellent hydrogel coating surface completely, while organic liquid drops such as toluene can slide off the water wetted coating surface easily. When immersed in water, the slippery oil-repellent hydrogel coating surface exhibits excellent underwater superoleophobic property with all oil contact angles more than 159 degrees and oil adhesive forces less than 1 mu N. The hydrogel coating keeps its oil repellency after long-term outdoor storage, thermal treatment, knife scratching and other treatments. Exploiting its water-attracting and oil-repelling property, the slippery oil-repellent hydrogel coated copper mesh and filter paper are demonstrated as reusable membranes to separate oil-water mixtures with separation efficiency more than 97%. Graphic abstract

引用

页码：2817 / 2827

页数：11