Soft blasting of fluorinated polymers: The easy way to superhydrophobicity

Abstract In this paper, we propose a new method for fabricating superhydrophobic surfaces. We use polytetrafluoroethylene (PTFE) as representative fluorinated polymer, and show that a few seconds blasting treatment of this material, with sodium bicarbonate (NaHCO 3 ) grit, can lead to superhydrophobicity with optimum sliding performances. Such a wetting behavior is correlated to the multi-scale random roughness of the surface, generated by abrasion and tearing of polymer fibers during the blasting process. This method, compared to other techniques generating superhydrophobic surfaces, turns out simpler, much more cost-effective, and directly suitable for large-scale applications.

[1]  Fabienne Poncin-Epaillard,et al.  Synthesis of transparent superhydrophobic polyethylene surfaces , 2006 .

[2]  Michael I. Newton,et al.  Immersed superhydrophobic surfaces: Gas exchange, slip and drag reduction properties , 2010 .

[3]  G. Carbone,et al.  Role of statistical properties of randomly rough surfaces in controlling superhydrophobicity. , 2013, Langmuir : the ACS journal of surfaces and colloids.

[4]  Jian Lu,et al.  Alumina grit blasting parameters for surface preparation in the plasma spraying operation , 1997 .

[5]  Joanna Aizenberg,et al.  Design of anti-icing surfaces: smooth, textured or slippery? , 2016 .

[6]  B. Persson,et al.  Fluid contact angle on solid surfaces: Role of multiscale surface roughness. , 2015, The Journal of chemical physics.

[7]  Alidad Amirfazli,et al.  Understanding of sliding and contact angle results in tilted plate experiments , 2008 .

[8]  Andreas Solga,et al.  The dream of staying clean: Lotus and biomimetic surfaces , 2007, Bioinspiration & biomimetics.

[9]  Shigeyasu Amada,et al.  Influence of grit blasting pre-treatment on the adhesion strength of plasma sprayed coatings: fractal analysis of roughness , 1998 .

[10]  G. Carbone,et al.  Filamentary superhydrophobic Teflon surfaces: Moderate apparent contact angle but superior air-retaining properties. , 2016, Journal of colloid and interface science.

[11]  S. Lan,et al.  Experimental study on the turbulent boundary layer flow over riblets surface , 2000 .

[12]  S. Paul,et al.  Effects of Grit Blasting on Surface Properties of Steel Substrates , 2009 .

[13]  F. Palumbo,et al.  Comments Regarding ‘An Essay on Contact Angle Measurements’ , 2011 .

[14]  R S Trask,et al.  Self-healing polymer composites: mimicking nature to enhance performance , 2007, Bioinspiration & biomimetics.

[15]  A. Vorobyev,et al.  Multifunctional surfaces produced by femtosecond laser pulses , 2015 .

[16]  J. Rothstein,et al.  Drag reduction using superhydrophobic sanded Teflon surfaces , 2014 .

[17]  Michael Nosonovsky,et al.  Multiscale roughness and stability of superhydrophobic biomimetic interfaces. , 2007, Langmuir : the ACS journal of surfaces and colloids.

[18]  R. Leask,et al.  Robust Non-Wetting PTFE Surfaces by Femtosecond Laser Machining , 2014, International journal of molecular sciences.

[19]  Axel Lauer,et al.  Emissions from international shipping: 1. The last 50 years , 2005 .

[20]  Michael A. Nilsson,et al.  A novel and inexpensive technique for creating superhydrophobic surfaces using Teflon and sandpaper , 2010 .

[21]  Jonathan P. Rothstein,et al.  Drag reduction in turbulent flows over superhydrophobic surfaces , 2009 .

[22]  Tao Yu,et al.  Preparation and characterization of steel surfaces for adhesive bonding , 2013 .

[23]  T. Darmanin,et al.  Recent advances in designing superhydrophobic surfaces. , 2013, Journal of colloid and interface science.

[24]  S. S. Latthe,et al.  Recent Progress in Preparation of Superhydrophobic Surfaces: A Review , 2012 .

[25]  E. Gogolides,et al.  Superamphiphobic Polymeric Surfaces Sustaining Ultrahigh Impact Pressures of Aqueous High‐ and Low‐Surface‐Tension Mixtures, Tested with Laser‐Induced Forward Transfer of Drops , 2015, Advanced materials.

[26]  D. Packham.  Surface energy, surface topography and adhesion , 2003 .

[27]  F. Palumbo,et al.  Long-lasting antifog plasma modification of transparent plastics. , 2014, ACS applied materials & interfaces.

[28]  Di Gao,et al.  Design and fabrication of micro-textures for inducing a superhydrophobic behavior on hydrophilic materials. , 2007, Langmuir : the ACS journal of surfaces and colloids.

[29]  Hang Wang,et al.  The effect of various sandblasting conditions on surface changes of dental zirconia and shear bond strength between zirconia core and indirect composite resin , 2015, The journal of advanced prosthodontics.

[30]  Peter Englezos,et al.  Patterned superhydrophobic metallic surfaces. , 2009, Langmuir : the ACS journal of surfaces and colloids.

[31]  Jooyoun Kim,et al.  Superhydrophobic Textiles: Review of Theoretical Definitions, Fabrication and Functional Evaluation , 2015 .