Modeling of Particle Dissolution Behavior Using a Geometrical Phase-Field Approach

Area of Science:

• Materials Science
• Physical Chemistry
• Computational Modeling

Background:

• Material dissolution is vital across industries, but current prediction tools struggle with increasing numbers of low-solubility substances.
• A fundamental understanding of dissolution mechanisms is needed to address these limitations.

Purpose of the Study:

• To develop a predictive tool for crystal dissolution performance using measurable physical parameters.
• To investigate the applicability of numerical simulations for diverse dissolution systems.

Main Methods:

• Employed the phase-field method, a numerical simulation technique.
• Simultaneously solved time evolution of phase and concentration fields for dissolving particles.
• Modeled both diffusion-limited (xylitol) and surface reaction-limited (griseofulvin) systems.

Main Results:

• Phase-field modeling accurately predicted dissolution behaviors for both high and low aqueous solubility compounds.
• The method is applicable to diffusion-limited and surface reaction-limited dissolution.
• Numerical investigation explored the impact of particle shape and proximity on dissolution.

Conclusions:

• Phase-field modeling is a powerful and versatile approach for predicting the dissolution of pure crystalline substances.
• This simulation tool can enhance understanding and prediction in materials science and pharmaceutical development.