Zeta Potential Measurements in Polymer Research

In many applications of polymer materials, as e.g. coatings, composites or as smart surfaces, the material properties or the adhesion to other substances are determined to a great amount by functional groups situated at the very surface. While contact angle measurements can reveal the polarity of a surface, the zeta potential (the electrical potential of a solid in contact to an aqueous solution) gives valuable information about its acid-base behaviour resulting from charged functional groups, the adsorption of ions and molecules, and time-dependent processes as swelling and chemical reactions.

In this free webinar, Dr. Drechsler will:

    • Introduce basic principles of electrokinetic measurements used to determine the zeta potential of samples of different size and geometry. 
    • Present examples of polymer surface characterization by zeta potential measurements in combination with other surface-sensitive methods.
    • Discuss practical problems in the implementation and analysis of zeta potential measurement.

About the speakers

Dr. Astrid Drechsler studied Physics at FSU Jena. After 2 years work in the microelectronics industry, she went to TU Dresden and received her PhD degree in the field of Physical Chemistry. In 1997, she joined the Leibniz-Institut für Polymerforschung Dresden e.V. and is now working there in the department Polymer Interfaces. She led and leads fundamental and application-oriented projects on surface modification of polymers or by polymers including various physico-chemical characterization methods, with focus on topography and roughness, wetting and zeta potential.