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Published on: June 22, 2014
Electrokinetics as an alternative to neutron reflectivity for evaluation of segment density distribution in PEO
Ralf Zimmermann1, Dirk Romeis, Isabelle Bihannic
1Leibniz Institute of Polymer Research Dresden, Max Bergmann Center of Biomaterials Dresden, Hohe Strasse 6, 01069 Dresden, Germany. zimmermn@ipfdd.de.
Abstract:
Unravelling details of charge, structure and molecular interactions of functional polymer coatings defines an important analytical challenge that requires the extension of current methodologies. In this article we demonstrate how streaming current measurements interpreted with combined self consistent field (SCF) and soft surface electrokinetic theories allow the evaluation of the segment distribution within poly(ethylene oxide) (PEO) brushes beyond the resolution limits of neutron reflectivity technique.
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