Insight into the Wetting Property of a Nanofiber Membrane by the Geometrical Potential

Author(s): Ning-bo Peng, Ji-huan He*

Journal Name: Recent Patents on Nanotechnology

Volume 14 , Issue 1 , 2020

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Graphical Abstract:


Background: There are many patents on design of a material surface with special wetting property, however, theoretical methods are lacked. The wetting property of a nanofiber member has attracted much attention. A material with different sizes or with different structures possesses different wetting properties. No theory can explain the phenomenon.

Methods: The contact angle, fiber fineness, pore size and layer of the nanofiber membrane were tested. The contact angles were measured for membranes with different thicknesses. The geometrical potential is used to explain the experimental phenomenon.

Results: The wetting property of a nanofiber membrane mainly depends on fiber diameter and thickness.

Conclusion: Wetting property of a PVA nanofiber membrane depends upon not only the hydrophilic groups, but also the geometrical structure of its surface, the latter prevails when the porous size of the membrane tends to a nanoscale, and the wetting property can be inverted from hydrophilicity to hydrophobicity.

Keywords: Wetting, lotus effect, nano-effect, geometrical potential, nanofiber, electrospinning, Cassie-Wenzel wetting.

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Article Details

Year: 2020
Published on: 25 April, 2020
Page: [64 - 70]
Pages: 7
DOI: 10.2174/1872210513666191120104149
Price: $65

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