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Updated: Jul 17, 2025
10:56
Confocal Imaging of Confined Quiescent and Flowing Colloid-polymer Mixtures
Published on: May 20, 2014
12.2K
A single-molecule study on polymer fluid dynamics in porous media
Antonia Sugar1, Maged Serag2, Ulrich Buttner3
1Physical Science and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Saudi Arabia. Hussein.hoteit@kaust.edu.sa.
Lab on a Chip
|September 1, 2023
Summary
Direct visualization of polymer flow in porous media reveals adsorption, entrapment, and hydrodynamic retention mechanisms. This microfluidic approach enhances understanding of polymer behavior for improved geoscience and materials science applications.
Area of Science:
- Geoscience
- Materials Science
- Rheology
Background:
- Polymeric fluid behavior in porous media is crucial for enhanced oil recovery and soil remediation.
- Previous studies relied on ensemble-averaged methods, limiting microscale understanding of polymer-surface interactions and retention mechanisms.
Purpose of the Study:
- To directly visualize and characterize the dynamic behavior of polymer molecules in porous media.
- To elucidate the microscale mechanisms of polymer retention and permeability reduction.
Main Methods:
- Integration of microfluidics with single-molecule imaging.
- Multi-scale characterization of polymer dynamics within a representative porous medium.
Main Results:
- Demonstrated that polymer adsorption, entrapment, and hydrodynamic retention collectively contribute to retention in porous media.
- Showcased microfluidics as a tool for understanding polymer-fluid-solid interface interactions and their impact on flow properties.
Conclusions:
- Microfluidic platforms offer a more accurate model for polymer retention and permeability reduction.
- Insights gained will improve models for complex fluids in confined environments, benefiting geoscience and materials science.
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