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Updated: Jun 10, 2026
16:24
Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
Published on: August 2, 2012
A mechanistic modelling approach to polymer dissolution using magnetic resonance microimaging.
Erik Kaunisto1, Susanna Abrahmsen-Alami, Per Borgquist
1Department of Chemical Engineering, LTH, Lund University, PO Box 124, SE-221 00 Lund, Sweden.
Summary
A new mathematical model efficiently simulates polyethylene oxide tablet swelling and dissolution. Magnetic resonance microimaging data validated the model, showing good agreement with experimental results for drug delivery applications.
Area of Science:
- Polymer science
- Materials science
- Computational modeling
Background:
- Polyethylene oxide (PEO) tablets are widely used in drug delivery.
- Understanding PEO tablet swelling and dissolution is crucial for controlled release.
- Existing models may lack computational efficiency or comprehensive validation.
Purpose of the Study:
- To develop a computationally efficient mathematical model for PEO tablet swelling and dissolution.
- To validate the model using experimental data, including magnetic resonance microimaging.
- To identify critical parameters and investigate the impact of hydrodynamic shearing.
Main Methods:
- Development of a mathematical model for PEO tablet swelling and dissolution.
- Calibration of the model against polymer release, front position, and water concentration profiles.
- Utilizing magnetic resonance microimaging (MRI) for water concentration data acquisition.
- Performing sensitivity analysis and investigating the effect of stirring rates.
Main Results:
- The developed model demonstrated computational efficiency.
- Good agreement was achieved between model predictions and experimental data.
- Magnetic resonance microimaging provided valuable data for model validation and mechanism discrimination.
- Sensitivity analysis identified critical parameters influencing swelling and dissolution.
Conclusions:
- The presented mathematical model accurately describes PEO tablet swelling and dissolution.
- The model, validated with MRI data, can differentiate between swelling, diffusion, and erosion mechanisms.
- The findings contribute to the design and optimization of PEO-based drug delivery systems.
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