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Materials 2018, 11(10), 2013; https://doi.org/10.3390/ma11102013

Physical and Morphological Changes of Poly(tetrafluoroethylene) after Using Non-Thermal Plasma-Treatments

1
Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida Tomase Bati 5678, 76001 Zlín, Czech Republic
2
École supérieure de Chimie Organique et Minérale ESCOM, Allée du Réseau Jean Marie Buckmaster, 60200 Compiègne, France
*
Author to whom correspondence should be addressed.
Received: 26 September 2018 / Revised: 12 October 2018 / Accepted: 16 October 2018 / Published: 17 October 2018
(This article belongs to the Special Issue Surface Modification to Improve Properties of Materials)
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Abstract

A commercial formulation of poly(tetrafluoroethylene) (PTFE) sheets were surface modified by using non-thermal air at 40 kHz frequency (DC) and 13.56 MHz radiofrequency (RF) at different durations and powers. In order to assess possible changes of PTFE surface properties, zeta potential (ζ), isoelectric points (IEPs) determinations, contact angle measurements as well as Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM) imaging were carried out throughout the experimentation. The overall outcome indicated that ζ-potential and surface energy progressively changed after each treatment, the IEP shifting to lower pH values and the implicit differences, which are produced after each distinct treatment, giving new surface topographies and chemistry. The present approach might serve as a feasible and promising method to alter the surface properties of poly(tetrafluoroethylene). View Full-Text
Keywords: Poly(tetrafluoroethylene); Teflon; plasma treatment; zeta potential; surface energy; contact angle measurement Poly(tetrafluoroethylene); Teflon; plasma treatment; zeta potential; surface energy; contact angle measurement
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López-García, J.; Cupessala, F.; Humpolíček, P.; Lehocký, M. Physical and Morphological Changes of Poly(tetrafluoroethylene) after Using Non-Thermal Plasma-Treatments. Materials 2018, 11, 2013.

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