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Measurements of Zeta Potential of Poly(Tetrafluoroethylene) Foils

Journal Materials Science Forum (Volumes 480 - 481)
Volume Cross-Disciplinary Applied Research in Materials Science and Technology
Edited by A. Méndez-Vilas
Pages 89-94
DOI 10.4028/www.scientific.net/MSF.480-481.89
Online since March, 2005
Authors Robert Šoster, Karin Stana-Kleinschek, Milan Brumen, Volker Ribitsch
Keywords Interfaces, Pretreatment, PTFE Surfaces, Zeta Potential Measurements
Abstract Zeta potential (ZP) of poly-tetrafluoroethylen (PTFE) and polyamide 6 (PA 6) foils was measured using the streaming potential method. All measurements were carried out in a flat cell where PTFE foils are usually used in electrokinetic measurements as a part of the measuring device, to form the channel and to achieve a proper distance between the foils surface of measured samples. The primary interest of the present work was to investigate the influence of pretreatment of PTFE foils on their electrokinetic properties in order to find out to what extent such pretreatment may affect measuring results of other samples and to develop a procedure of PTFE foils preparation with purpose to achieve the same initial conditions for all measurements.
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