Modeling Mass Transport Dynamics in Deformable Hydrogels during Evaporation

Area of Science:

• Bioengineering
• Materials Science
• Computational Modeling

Background:

• Hydrogels are vital in bioengineering for health monitoring and drug delivery due to their mechanical properties and biocompatibility.
• Predicting solute distribution in hydrogels is challenging due to complex interactions between water, solutes, and the polymer network.
• Existing theoretical models struggle to capture the dynamic behavior of hydrogels during transport processes.

Purpose of the Study:

• To develop a numerical model for simulating water and solute transport within deformable hydrogels.
• To account for boundary conditions such as evaporation and moisture absorption.
• To validate the model's accuracy against experimental data.

Main Methods:

• Developed an iterative numerical model solving for water saturation, solute concentration, and hydrogel deformation.
• Incorporated boundary movement velocity calculations based on transport processes.
• Validated the model by comparing simulated geometry deformation and substance distribution with experimental results during evaporation.

Main Results:

• The numerical model accurately predicts hydrogel geometry deformation during water loss.
• The model precisely simulates water and solute distribution within the hydrogel.
• Experimental validation confirms the model's accuracy and applicability.

Conclusions:

• The developed numerical model offers a powerful tool for analyzing complex transport phenomena in hydrogels.
• This advancement enables precise control and prediction in hydrogel-based biosensing and drug delivery applications.
• The model facilitates the design of next-generation devices utilizing elastic porous materials.