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Updated: Jun 25, 2026
08:12
Depolymerizable Olefinic Polymers Based on Fused-Ring Cyclooctene Monomers
Published on: December 16, 2022
The EOF of polymer solutions
María L Olivares1, Luciana Vera-Candioti, Claudio L A Berli
1INTEC (UNL-CONICET), Güemes, Santa Fe, Argentina.
Electrophoresis
|February 7, 2009
Summary
This study models electroosmotic flow (EOF) in polymer solutions, considering non-Newtonian fluid properties and polymer concentration effects. The model accurately predicts electroosmotic mobility, particularly with polymer depletion at interfaces.
Area of Science:
- Physical Chemistry
- Fluid Mechanics
- Materials Science
Background:
- Electroosmotic flow (EOF) is crucial in microfluidic and electrophoretic applications.
- Polymer solutions exhibit complex behavior near interfaces, affecting EOF.
- Non-Newtonian fluid properties and interfacial polymer concentration significantly alter viscosity.
Purpose of the Study:
- To develop a mathematical model for electroosmotic mobility in polymer solutions.
- To account for non-Newtonian fluid behavior and polymer concentration effects at the interface.
- To validate the model with experimental data for polymer solutions in capillaries.
Main Methods:
- Analysis within continuum fluid mechanics and electrokinetic theory.
- Development of a mathematical model incorporating non-Newtonian viscosity and interfacial polymer concentration.
- Experimental investigation using aqueous carboxymethyl cellulose solutions in fused-silica capillaries.
Main Results:
- A satisfactory mathematical model was derived for electroosmotic mobility with polymer depletion.
- The model effectively captures experimental data for carboxymethyl cellulose solutions.
- Insights into polymer adsorption effects on EOF were discussed.
Conclusions:
- The developed model accurately describes electroosmotic flow in non-Newtonian polymer solutions.
- Understanding interfacial polymer behavior is key to predicting EOF in microdevices.
- The findings are relevant for advancing microfluidics and electrophoresis technologies.
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