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Superhydrophobicity and Durability in Recyclable Polymers Coating

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  • Francesca Cirisano

    (CNR-ICMATE-National Research Council, Institute of Condensed Matter Chemistry and Technologies for Energy, 16149 Genova, Italy)

  • Michele Ferrari

    (CNR-ICMATE-National Research Council, Institute of Condensed Matter Chemistry and Technologies for Energy, 16149 Genova, Italy)

Abstract

Highly hydrophobic and superhydrophobic materials obtained from recycled polymers represent an interesting challenge to recycle and reuse advanced performance materials after their first life. In this article, we present a simple and low-cost method to fabricate a superhydrophobic surface by employing polytetrafluoroethylene (PTFE) powder in polystyrene (PS) dispersion. With respect to the literature, the superhydrophobic surface (SHS) was prepared by utilizing a spray- coating technique at room temperature, a glass substrate without any further modification or thermal treatment, and which can be applied onto a large area and on to any type of material with some degree of fine control over the wettability properties. The prepared surface showed superhydrophobic behavior with a water contact angle (CA) of 170°; furthermore, the coating was characterized with different techniques, such as a 3D confocal profilometer, to measure the average roughness of the coating, and scanning electron microscopy (SEM) to characterize the surface morphology. In addition, the durability of SH coating was investigated by a long-water impact test (raining test), thermal treatment at high temperature, an abrasion test, and in acidic and alkaline environments. The present study may suggest an easy and scalable method to produce SHS PS/PTFE films that may find implementation in various fields.

Suggested Citation

  • Francesca Cirisano & Michele Ferrari, 2021. "Superhydrophobicity and Durability in Recyclable Polymers Coating," Sustainability, MDPI, vol. 13(15), pages 1-12, July.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:15:p:8244-:d:600045
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    References listed on IDEAS

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    1. Andrew R. Parker & Chris R. Lawrence, 2001. "Water capture by a desert beetle," Nature, Nature, vol. 414(6859), pages 33-34, November.
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    Cited by:

    1. Radu Nartita & Daniela Ionita & Ioana Demetrescu, 2021. "Sustainable Coatings on Metallic Alloys as a Nowadays Challenge," Sustainability, MDPI, vol. 13(18), pages 1-20, September.

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