Femtosecond laser ablated durable superhydrophobic PTFE sheet for oil/water separation

Wentao Li; Qing Yang; Feng Chen; Jiale Yong; Yao Fang; Jinglan Huo

doi:10.1117/12.2257839

28 February 2017 Femtosecond laser ablated durable superhydrophobic PTFE sheet for oil/water separation

Wentao Li, Qing Yang, Feng Chen, Jiale Yong, Yao Fang, Jinglan Huo

Proceedings Volume 10256, Second International Conference on Photonics and Optical Engineering; 102563O (2017) https://doi.org/10.1117/12.2257839
Event: Second International Conference on Photonics and Optical Engineering, 2016, Xi'an, China

Abstract

Femtosecond laser microfabrication has been attracting increasing interest of researchers in recent years, and been applied on interface science to control the wettability of solid surfaces. Herein, we fabricate a kind of rough microstructures on polytetrafluoroethylene (PTFE) sheet by femtosecond laser. The femtosecond laser ablated surfaces show durable superhydrophobicity and ultralow water adhesion even after storing in a harsh environment for a long time, including strong acid, strong alkali, and high temperature. A penetrating microholes array was further generated on the rough superhydrophobic PTFE sheet by a subsequent mechanical drilling process. The as-prepared material was successfully applied in the field of oil/water separation due to the inverse superhydrophobicity and superoleophilicity.

Citation Download Citation

Wentao Li, Qing Yang, Feng Chen, Jiale Yong, Yao Fang, and Jinglan Huo "Femtosecond laser ablated durable superhydrophobic PTFE sheet for oil/water separation", Proc. SPIE 10256, Second International Conference on Photonics and Optical Engineering, 102563O (28 February 2017); https://doi.org/10.1117/12.2257839

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