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Materials 2018, 11(12), 2547; https://doi.org/10.3390/ma11122547

Creation of Superhydrophobic and Superhydrophilic Surfaces on ABS Employing a Nanosecond Laser

1
Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC Dpto. Ciencia y Tecnología de Materiales y Fluidos Maria de Luna 3, 50018 Zaragoza, Spain
2
Instituto de Ciencia de Materiales de Aragón, Universidad de Zaragoza-CSIC Dpto. Química Orgánica-Facultad de Ciencias Pedro Cerbuna 12, 50009 Zaragoza, Spain
*
Author to whom correspondence should be addressed.
Received: 27 November 2018 / Revised: 10 December 2018 / Accepted: 12 December 2018 / Published: 14 December 2018
(This article belongs to the Special Issue Polymeric Materials: Surfaces, Interfaces and Bioapplications)
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Abstract

A nanosecond green laser was employed to obtain both superhydrophobic and superhydrophilic surfaces on a white commercial acrylonitrile-butadiene-styrene copolymer (ABS). These wetting behaviors were directly related to a laser-induced superficial modification. A predefined pattern was not produced by the laser, rather, the entire surface was covered with laser pulses at 1200 DPI by placing the sample at different positions along the focal axis. The changes were related to the laser fluence used in each case. The highest fluence, on the focal position, induced a drastic heating of the material surface, and this enabled the melted material to flow, thus leading to an almost flat superhydrophilic surface. By contrast, the use of a lower fluence by placing the sample 0.8 µm out of the focal position led to a poor material flow and a fast cooling that froze in a rugged superhydrophobic surface. Contact angles higher than 150° and roll angles of less than 10° were obtained. These wetting behaviors were stable over time. View Full-Text
Keywords: nanosecond laser surface modification; ABS (Acrylonitrile-Butadiene-Styrene); surface wettability; superhydrophobic; superhydrophilic nanosecond laser surface modification; ABS (Acrylonitrile-Butadiene-Styrene); surface wettability; superhydrophobic; superhydrophilic
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Lavieja, C.; Oriol, L.; Peña, J.-I. Creation of Superhydrophobic and Superhydrophilic Surfaces on ABS Employing a Nanosecond Laser. Materials 2018, 11, 2547.

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