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Adsorption of Surfactants on Polymer Surfaces Investigated with a Novel Zeta-Potential Measurement System
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Adsorption of Surfactants on Polymer Surfaces Investigated with a Novel Zeta-Potential Measurement System

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Abstract:

The determination of electrokinetic properties such as the zeta-potential of polymer samples with classical methods is laborious and time-consuming. For this reasons, a reliable, fast, and easy to use measurement system based on streaming potential measurement was developed. In this novel measurement system, streaming potential is created by an oscillating flow of a small amount of electrolyte solution through the sample media. In addition, this setup allows direct titration and therefore time-resolved monitoring of changes in zeta-potential in a seconds timescale. With this instrument, the concentration- as well as the time-dependent adsorption behaviour of various non-ionic, anionic and cationic surfactants on a novel, regenerated cellulosic polymer was investigated. This new cellulose-based, fibrous textile polymer is permanently cationised, not only at the surface but throughout the whole fibre. The results show that even very low concentrations of surfactant, due to its charge and chemical composition, highly influence the surface charge of the polymer in a large range. Furthermore, the results for this new textile material are compared with other textile fibres, e. g. wool.

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Advanced Materials Forum III View Preview

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Periodical:

Materials Science Forum (Volumes 514-516)

Pages:

1374-1378

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.514-516.1374

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Online since:

May 2006

Authors:

Martin Reischl, Karin Stana-Kleinschek, Volker Ribitsch

Keywords:

Cellulosic Fibre, Polymer Surface, Surfactant Adsorption, Zeta-Potential

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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