Recent Progress and Perspectives in the Electrokinetic Characterization of Polyelectrolyte FilmsReport as inadecuate




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1

Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Hohe Strasse 6, 01069 Dresden, Germany

2

Technische Universität Dresden, Center for Regenerative Therapies Dresden, Tatzberg 47, 01307 Dresden, Germany

3

Laboratoire Interdisciplinaire des Environnements Continentaux LIEC, CNRS UMR 7360, 15 avenue du Charmois, B.P. 40, F-54501 Vandoeuvre-lès-Nancy cedex, France



These authors contributed equally to this work.





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Author to whom correspondence should be addressed.



Academic Editor: Christine Wandrey

Abstract The analysis of the charge, structure and molecular interactions of-within polymeric substrates defines an important analytical challenge in materials science. Accordingly, advanced electrokinetic methods and theories have been developed to investigate the charging mechanisms and structure of soft material coatings. In particular, there has been significant progress in the quantitative interpretation of streaming current and surface conductivity data of polymeric films from the application of recent theories developed for the electrohydrodynamics of diffuse soft planar interfaces. Here, we review the theory and experimental strategies to analyze the interrelations of the charge and structure of polyelectrolyte layers supported by planar carriers under electrokinetic conditions. To illustrate the options arising from these developments, we discuss experimental and simulation data for plasma-immobilized polyacrylic acid films and for a polyelectrolyte bilayer consisting of polyethylene imine and polyacrylic acid. Finally, we briefly outline potential future developments in the field of the electrokinetics of polyelectrolyte layers. View Full-Text

Keywords: electrokinetics; polyelectrolyte films; interfacial charge; streaming current; surface conductivity electrokinetics; polyelectrolyte films; interfacial charge; streaming current; surface conductivity





Author: Ralf Zimmermann 1,†,* , Carsten Werner 1,2 and Jérôme F. L. Duval 3,†

Source: http://mdpi.com/



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