Fraunhofer Institute for 
Particle electrophorese (PE)
Analyte
- Charged polyelectolytes, colloids and nanoparticles
- Electrophoretic mobility (zeta potential)
- Size range: 0.1 nm – 3 µm
- Concentration range: 0.001 – 40 %
Equipment
- Delsa Nano +C (Beckman Coulter)
- Delsa Nano Version 2.31
Target
- Electrophoretic light scattering
- Determination of the electrophoretic mobility and calculation of the zeta potential according to the Smoluchowski or Huckel method
Application
- Determination of the zeta potential of symplexes between cationic starch and anionic polyelectrolytes
- Determination of the zeta potential of polyelectrolytes as a function of pH and the electrolyte content of the solution
- Evaluation of the stability of dispersions and emulsions
Measurement method
- Investigations concerning the symplex formation between cationic starch and anionic polyelectrolytes (see PDF)
Methods of comparison and supplementation
- Polyelectrolyte titration