Encinas García, NoemíPantoja Ruiz, MariolaMartínez Casanova, Miguel ÁngelTorres Remiro, M.2016-05-182016-05-182011-08-30The journal of adhesion, (Papers from the 4th International Conference on Advanced Computational Engineering and Experimenting, ACE-X 2010), vol. 87, issue 7-8 (2011), pp. 709-7190021-8464https://hdl.handle.net/10016/23000Presented in part at the 4th International Conference on Advanced Computational Engineering and Experimenting (ACE X 2010), Special session on "Adhesive bonding", Paris, France, 8 9 July 2010In this work, we present an approach to achieve improved adhesive bonding with a poly(tetrafluoroethylene) (PTFE) substrate. Surfaces were modified by abrasion, atmospheric air plasma torch (APPT) treatment, and by immersion in basic (NaOH) and strongly acidic/oxidizing (HNO3/KMnO4) solutions. The wetting properties of the polymer were studied in terms of surface energy, and adhesion tests were carried out using polyurethane, acrylic, and epoxy adhesives. The surface characterisation included surface energy calculation through contact angle measurements, infrared spectroscopy (FTIR-ATR), scanning electron microscopy (SEM), and X-ray electron diffraction (EDX). Adhesion was evaluated by pull-off tests following the UNE EN-24624 standard. Experiments revealed that both oxidation and plasma treatment enhanced surface energy, defluorination, and the creation of a rougher PTFE surface, resulting in adhesion. Simple oxidation and its combination with plasma treatments yielded the higher tensile strength results, with epoxy as the most suitable adhesive among those studied. Samples presented adhesive or mixed type failure modes.11application/pdfeng© Taylor & Francis Group, LLCAdhesionAtmospheric plasmaPoly(tetrafluoroethylene)Polymeric pre-treatmentsSurface energyWettabilityconference paperMateriales10.1080/00218464.2011.596778open access7097-8719The journal of adhesion87CC/0000024347