Slippery, Water-Infused Membrane with Grooved Nanotrichomes for Lubricating-Induced Oil Repellency

Young A. Lee; Seohyun Cho; Seounkyun Choi; O. Chang Kwon; Sun Mi Yoon; Seong Jin Kim; Kyoo Chul Park; Seok Chung; Myoung Woon Moon

doi:10.1002/advs.202103950

Slippery, Water-Infused Membrane with Grooved Nanotrichomes for Lubricating-Induced Oil Repellency

Young A. Lee, Seohyun Cho, Seounkyun Choi, O. Chang Kwon, Sun Mi Yoon, Seong Jin Kim, Kyoo Chul Park, Seok Chung^*, Myoung Woon Moon^*

^*Corresponding author for this work

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Water, abundant and ubiquitous in nature, is an easy yet powerful resource for the creatures to survive by putting together with their topologies interfacing their living environment. Here, a slippery, water-infusing surface (SWIS) that retains a thick and stable water layer on the membrane is presented, robustly maintaining the oil repellency against the pressure and friction of immiscible liquids. Inspired by the plant trichome structures and their function, grooved nanotrichome, formed on the fibrous membrane by the oxygen plasma etching, induces robust water lubrication on the SWIS. SWIS membrane repels and separates highly viscous and adhesive oils in air and underwater by preventing oils from adhering to the lubricating surface. Repeated tests both in air and underwater confirm the antiadhesion and self-cleaning properties of the SWIS. The SWIS oil scooper, fixed on a frame with a handle, successfully collects spilled oil on a pilot-scale oil spill site and a real ocean oil spill site by simply scooping and recovering the oil. In addition, SWIS membrane is expected to help protect environments with further applications such as oil-wastewater treatment and oil separation in food.

Original language	English (US)
Article number	2103950
Journal	Advanced Science
Volume	9
Issue number	13
DOIs	https://doi.org/10.1002/advs.202103950
State	Published - May 5 2022

Funding

Authors sincerely appreciated the korea coast guard for their kind collaboration on the oil-spill test and Ms Yanghee Kim, Ms So Hee Kim, and Dr Ji-Young Kim from Advanced Analysis Center at KIST for helping the imaging. This work was supported partly by the Korea Coast Guard, Korea (KIMST-20210584) and KIST (2E31792) (MWM) and partly by Samsung Research Funding & Incubation Center of Samsung Electronics under Project Number SRFC- IT1901-10 (SC). Authors sincerely appreciated the korea coast guard for their kind collaboration on the oil‐spill test and Ms Yanghee Kim, Ms So Hee Kim, and Dr Ji‐Young Kim from Advanced Analysis Center at KIST for helping the imaging. This work was supported partly by the Korea Coast Guard, Korea (KIMST‐20210584) and KIST (2E31792) (MWM) and partly by Samsung Research Funding & Incubation Center of Samsung Electronics under Project Number SRFC‐ IT1901‐10 (SC).

Keywords

SWIS oil scooper
grooved nanotrichome
slippery water infused membrane
thick and stable water lubrication layer

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy
General Chemical Engineering
General Materials Science
Biochemistry, Genetics and Molecular Biology (miscellaneous)
Medicine (miscellaneous)

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10.1002/advs.202103950

Cite this

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abstract = "Water, abundant and ubiquitous in nature, is an easy yet powerful resource for the creatures to survive by putting together with their topologies interfacing their living environment. Here, a slippery, water-infusing surface (SWIS) that retains a thick and stable water layer on the membrane is presented, robustly maintaining the oil repellency against the pressure and friction of immiscible liquids. Inspired by the plant trichome structures and their function, grooved nanotrichome, formed on the fibrous membrane by the oxygen plasma etching, induces robust water lubrication on the SWIS. SWIS membrane repels and separates highly viscous and adhesive oils in air and underwater by preventing oils from adhering to the lubricating surface. Repeated tests both in air and underwater confirm the antiadhesion and self-cleaning properties of the SWIS. The SWIS oil scooper, fixed on a frame with a handle, successfully collects spilled oil on a pilot-scale oil spill site and a real ocean oil spill site by simply scooping and recovering the oil. In addition, SWIS membrane is expected to help protect environments with further applications such as oil-wastewater treatment and oil separation in food.",

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Slippery, Water-Infused Membrane with Grooved Nanotrichomes for Lubricating-Induced Oil Repellency

Abstract

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Keywords

ASJC Scopus subject areas

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