Jammed Limit of Bijel Structure Formation.

Area of Science:

• Materials Science
• Soft Matter Physics
• Chemical Engineering

Background:

• Bijels are bicontinuous materials formed by arresting spinodal decomposition with colloidal particles.
• Controlling bijel microstructure is crucial for developing advanced heterogeneous mixtures.

Purpose of the Study:

• To present a new model for bijel development.
• To identify the key parameters governing bijel formation dynamics and structure.
• To validate the model against experimental observations.

Main Methods:

• Development of a new theoretical model for bijel formation.
• Numerical and analytical evaluation of the model.
• Identification and analysis of a critical dimensionless parameter.

Main Results:

• A single dimensionless parameter governs bijel dynamics and final structure.
• A specific range for this parameter is required for jamming during spinodal decomposition.
• The model accurately reproduces experimental trends in domain size and formation time scales.

Conclusions:

• The developed model provides a fundamental understanding of bijel formation.
• The identified dimensionless parameter is key to controlling bijel microstructure.
• This work offers a predictive framework for designing bijel materials.