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Synthesis and texturization processes of (super)-hydrophobic fluorinated surfaces by atmospheric plasma

Published online by Cambridge University Press:  02 October 2015

J. Hubert ,
J. Mertens ,
T. Dufour ,
N. Vandencasteele ,
F. Reniers ,
P. Viville ,
R. Lazzaroni ,
M. Raes  and
H. Terryn
J. Hubert
Affiliation:
Faculté des Sciences, Service de Chimie Analytique et de Chimie des Interfaces, Université Libre de Bruxelles, CP-255, Bld du Triomphe, B-1050 Bruxelles, Belgium
J. Mertens
Affiliation:
Faculté des Sciences, Service de Chimie Analytique et de Chimie des Interfaces, Université Libre de Bruxelles, CP-255, Bld du Triomphe, B-1050 Bruxelles, Belgium
T. Dufour
Affiliation:
Faculté des Sciences, Service de Chimie Analytique et de Chimie des Interfaces, Université Libre de Bruxelles, CP-255, Bld du Triomphe, B-1050 Bruxelles, Belgium
N. Vandencasteele
Affiliation:
Faculté des Sciences, Service de Chimie Analytique et de Chimie des Interfaces, Université Libre de Bruxelles, CP-255, Bld du Triomphe, B-1050 Bruxelles, Belgium
F. Reniers*
Affiliation:
Faculté des Sciences, Service de Chimie Analytique et de Chimie des Interfaces, Université Libre de Bruxelles, CP-255, Bld du Triomphe, B-1050 Bruxelles, Belgium
P. Viville
Affiliation:
Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS/Materia Nova, 20 Place du Parc, 7000 Mons, Belgium
R. Lazzaroni
Affiliation:
Service de Chimie des Matériaux Nouveaux, Université de Mons-UMONS/Materia Nova, 20 Place du Parc, 7000 Mons, Belgium
M. Raes
Affiliation:
Department of Metallurgy, Electrochemistry and Materials Science (SURF), Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussel, Belgium
H. Terryn
Affiliation:
Department of Metallurgy, Electrochemistry and Materials Science (SURF), Vrije Universiteit Brussel (VUB), Pleinlaan 2, B-1050 Brussel, Belgium
*
a)Address all correspondence to this author. e-mail: freniers@ulb.ac.be
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Abstract

The synthesis and texturization processes of fluorinated surfaces by means of atmospheric plasma are investigated and presented through an integrated study of both the plasma phase and the resulting material surface. Three methods enhancing the surface hydrophobicity up to the production of super-hydrophobic surfaces are evaluated: (i) the modification of a polytetrafluoroethylene (PTFE) surface, (ii) the plasma deposition of fluorinated coatings and (iii) the incorporation of nanoparticles into those fluorinated films. In all the approaches, the nature of the plasma gas appears to be a crucial parameter for the desired property. Although a higher etching of the PTFE surface can be obtained with a pure helium plasma, the texturization can only be created if O2 is added to the plasma, which simultaneously decreases the total etching. The deposition of CxFy films by a dielectric barrier discharge leads to hydrophobic coatings with water contact angles (WCAs) of 115°, but only the filamentary argon discharge induces higher WCAs. Finally, nanoparticles were deposited under the fluorinated layer to increase the surface roughness and therefore produce super-hydrophobic hybrid coatings characterized by the nonadherence of the water droplet at the surface.

Keywords

plasma-enhanced CVD (PECVD)polymersurface chemistry
Type
Invited Feature Papers
Information
Journal of Materials Research , Volume 30 , Issue 21 , 13 November 2015 , pp. 3177 - 3191
Copyright
Copyright © Materials Research Society 2015 

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Footnotes

This paper has been selected as an Invited Feature Paper.

Contributing Editor: Akira Nakajima

References

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