Extreme water repellency of nanostructured low-surface-energy non-woven fabrics

Title
Extreme water repellency of nanostructured low-surface-energy non-woven fabrics
Authors
신봉수이광렬문명운김호영
Keywords
exterme wettability; superhydrophobic; superoleophilic
Issue Date
2012-03
Publisher
Soft Matter
Citation
VOL 8, NO 6, 1817-1823
Abstract
We report the extreme water repellent nature of non-woven fabrics of PET (polyethyleneterephthalate) whose fiber surfaces are nanotextured with oxygen plasma and coated with a low-surface-energy nanofilm. The surface effectively suppresses vapor condensation and repels condensed water droplets in addition to exhibiting a high contact angle and a low contact angle hysteresis with a millimetre-sized water drop. We also show that the surface maintains its superhydrophobicity after water-vapor condensation and after oil-wetting due to high-aspect-ratio nanohairs on the fibers. The superior waterrepellent ability of the plasma treated non-woven fabric can be exploited in a variety of industrial applications including water harvesting and fuel cell water management even under oily contaminations.
URI
http://pubs.kist.re.kr/handle/201004/42007
ISSN
1744683X
Appears in Collections:
KIST Publication > Article
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