UV-curable superhydrophobic organosilicon/silica hybrid coating on cotton fabric for oil-water separation

被引:9
|
作者
Gao, Shan [1 ]
Li, Hongqiang [1 ]
Lai, Xuejun [1 ]
Zeng, Xingrong [1 ]
机构
[1] South China Univ Technol, Sch Mat Sci & Engn, Key Lab Guangdong Prov High Property & Funct Poly, 381 Wushan Rd, Guangzhou 510640, Peoples R China
关键词
Superhydrophobic fabric; Thiol-functionalized silica; Acryloyloxy-terminated polydimethylsiloxane; UV curable; Oil-water separation; FACILE FABRICATION; SURFACES; ROBUST; WETTABILITY; ADHESION; ABSORPTION; MEMBRANES; KINETICS; TEXTILES; SPONGES;
D O I
10.1007/s11998-020-00362-z
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
With the increasing occurrences of industrial oily wastewater emissions and oil spills, considerable efforts have been made to develop superhydrophobic materials for oil-water separation. Herein, we report a facile dipping-UV curing approach to fabricate superhydrophobic organosilicon/silica hybrid coating with crosslinked network structure on cotton fabric via thiol-ene reaction between thiol-functionalized silica nanoparticles (SH-SiO(2)NPs) and acryloyloxy-terminated polydimethylsiloxane (A-PDMS-A). With the optimized mass ratio of SH-SiO(2)NPs to A-PDMS-A at 0.2, the water contact angle of the fabric reached 155 degrees and the water sliding angle was 8 degrees, exhibiting excellent water repellency. Furthermore, the superhydrophobic cotton fabric possessed self-cleaning ability and good surface stability. In addition, the fabric was successfully applied for effective oil-water separation, and the separation efficiency reached up to 99.06%. Even after 15 cycles, the separation efficiency still maintained 98.93%, demonstrating excellent reusability. Our findings stand out as a new tool to fabricate UV-curable superhydrophobic coating on cotton fabric for efficient oil-water separation.
引用
收藏
页码:1413 / 1423
页数:11
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