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Polymers 2015, 7(9), 1674-1688;

Polymeric Shape-Memory Micro-Patterned Surface for Switching Wettability with Temperature

Basque Center for Materials, Applications and Nanostructures (BCMaterials), Parque Tecnológico deBizkaia, Ed. 500, Derio 48160, Spain
Gaiker Technology Centre, Parque Tecnológico de Bizkaia, Ed. 202, Zamudio 48170, Spain
Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco/EHU, Apdo. 644, Bilbao E-48080, Spain
Author to whom correspondence should be addressed.
Academic Editor: Wei Min Huang
Received: 7 July 2015 / Revised: 15 August 2015 / Accepted: 28 August 2015 / Published: 8 September 2015
(This article belongs to the Special Issue Shape-Memory Polymers)
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An innovative method to switch the wettability of a micropatterned polymeric surface by thermally induced shape memory effect is presented. For this purpose, first polycyclooctene (PCO) is crosslinked with dycumil peroxide (DCP) and its melting temperature, which corresponds with the switching transition temperature (Ttrans), is measured by Dynamic Mechanical Thermal Analysis (DMTA) in tension mode. Later, the shape memory behavior of the bulk material is analyzed under different experimental conditions employing a cyclic thermomechanical analysis (TMA). Finally, after creating shape memory micropillars by laser ablation of crosslinked thermo-active polycyclooctene (PCO), shape memory response and associated effect on water contact angle is analyzed. Thus, deformed micropillars cause lower contact angle on the surface from reduced roughness, but the original hydrophobicity is restored by thermally induced recovery of the original surface structure. View Full-Text
Keywords: shape memory polymer; laser ablation; wettability; patterning; water contact angle; thermomechanical analysis shape memory polymer; laser ablation; wettability; patterning; water contact angle; thermomechanical analysis

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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García-Huete, N.; Cuevas, J.M.; Laza, J.M.; Vilas, J.L.; León, L.M. Polymeric Shape-Memory Micro-Patterned Surface for Switching Wettability with Temperature. Polymers 2015, 7, 1674-1688.

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