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Applied Physics Letters / Volume 100 / Issue 5 / NANOSCALE SCIENCE AND TECHNOLOGY

Appl. Phys. Lett. 100, 053112 (2012); http://dx.doi.org/10.1063/1.3680567 (4 pages)

Temperature and humidity effects on superhydrophobicity of nanocomposite coatings

Yong Han Yeong1, Adam Steele1, Eric Loth1, Ilker Bayer2, Guillaume De Combarieu3, and Charles Lakeman4

1Department of Mechanical and Aerospace Engineering, University of Virginia, Charlottesville, Virginia 22904, USA
2Center of Biomolecular Nanotechonologies@UNILE, Italian Institute of Technology, Arnesano (LE) 73010, Italy
3AREVA Renewables-Technology & Innovation Center, Aix en Provence Cedex 3 13592, France
4AREVA Renewables, Bethesda, Maryland 20814, USA

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(Received 11 October 2011; accepted 11 January 2012; published online 31 January 2012)

This work investigates temperature and humidity effects on the superhydrophobicity of polyurethane/organoclay nanocomposites. Previous reports of superhydrophobic degradation at decreasing surface temperatures for both low and high humidity were generally conducted in open environments. However, the present setup allows a thermally homogeneous environment, i.e., the temperature of the nanocomposite, air and water droplet are equal with no spatial temperature gradients. In such conditions, results showed stable retention of superhydrophobicity for both low humidity (RH < 20%) cool-down and warm-up cycles (20 °C to −3 °C to 20 °C). Similar performance was also observed for a high humidity (RH > 80%) cool-down cycle, though superhydrophobicity degraded during the warm-up cycle, which was attributed to dew condensation.

© 2012 American Institute of Physics

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KEYWORDS, PACS, and IPC

Keywords

clay, coatings, condensation, cooling, drops, humidity, hydrophobicity, nanocomposites, polymers

PACS

International Patent Classification (IPC)

  • B01D5/00

    Condensation of vapours; Recovering volatile solvents by condensation

  • B82B1/00

    Nano-structures

  • F25

    Refrigeration or cooling; Combined heating and refrigeration systems; Heat pump systems; Manufacture or storage of ice; Liquefaction or solidification of gases

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3680567

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    C.-H. Chen, Q. Cai, C. Tsai, C.-L. Chen, G. Xiong, Y. Yu, and Z. Ren, Appl. Phys. Lett. 90, 173108 (2007)APPLAB000090000017173108000001.

    M. He, H. Li, J. Wang, and Y. Song, Appl. Phys. Lett. 98, 093118 (2011)APPLAB000098000009093118000001.


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