Fabrication of silica/PVA-co-PE nanofiber membrane for oil/water separation

Fashion and Textiles

Yuedan Wang¹  Wenwen Wang²  Xinlin Zha³  Hui Fan³  Yi Xiong⁴  Yi Wu⁴  Kun Yan⁵  Yuanli Chen⁵  Dong Wang⁶ 

[1]Associate professor, School of Materials Science and Engineering, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[2]Associate professor, School of Materials Science and Engineering, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[3]Key Laboratory of Advanced Textile Materials & Application of Hubei Province, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[4]Graduate student, School of Materials Science and Engineering, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[5]Key Laboratory of Advanced Textile Materials & Application of Hubei Province, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[6]Phd, Key Laboratory of Advanced Textile Materials & Application of Hubei Province, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[7]Phd, School of Materials Science and Engineering, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[8]Key Laboratory of Advanced Textile Materials & Application of Hubei Province, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

[9]Professor, Key Laboratory of Advanced Textile Materials & Application of Hubei Province, Wuhan Textile University, Yangguang Road 1, 430073, Wuhan, People’s Republic of China

关键词: -co-;    Radical pore;    Hollow structure;    Silica;    Oil/water separation;   

DOI  :  10.1186/s40691-021-00252-x

来源: Springer

【 摘 要 】

High efficiency and anti-pollution oil/water separation membrane has been widely explored and researched. There are a large number of hydroxyl groups on the surface of silica, which has good wettability and can be used for oil-water separation membranes. Hydrophilic silica nanostructures with different morphologies were synthesized by changing templates and contents of trimethylbenzene (TMB). Here, silica nanospheres with radical pores, hollow silica nanospheres and worm-like silica nanotubes were separately sprayed on the PVA-co-PE nanofiber membrane (PM). The abundance of hydroxyl groups and porous structures on PM surfaces enabled the absorption of silica nanospheres through hydrogen bonds. Compared with different silica nanostructures, it was found that the silica/PM exhibited excellent super-hydrophilicity in air and underwater “oil-hating” properties. The PM was mass-produced in our lab through melt-extrusion-phase-separation technique. Therefore, the obtained membranes not only have excellent underwater superoleophobicity but also have a low-cost production. The prepared silica/PM composites were used to separate n-hexane/water, silicone oil/water and peanut oil water mixtures via filtration. As a result, they all exhibited efficient separation of oil/water mixture through gravity-driven filtration.

【 授权许可】

CC BY