Thermally Assisted Microfluidics to Produce Chemically Equivalent Microgels with Tunable Network Morphologies

Area of Science:

• Biomaterials Science
• Polymer Chemistry
• Regenerative Medicine

Background:

• Microgels are crucial in regenerative materials, but their properties often change with morphology.
• Cellular responses depend on microgel physical, chemical, and structural characteristics.
• There is a need for microgels with consistent chemistry but varied morphology.

Purpose of the Study:

• To develop a method for producing thermoresponsive microgels with controlled properties.
• To create chemically equivalent microgels with diverse morphologies and mechanical characteristics.
• To enable microgel phase transitions at physiological temperatures for biomedical applications.

Main Methods:

• Synthesis of thermoresponsive microgels via thermally assisted microfluidics.
• Crosslinking of monomers or star polymers at varying temperatures.
• Characterization of microgel mechanical properties, surface morphology, and transition temperatures.

Main Results:

• Successful production of a wide variety of microgels with distinct network structures and morphologies.
• Demonstration of chemical equivalence across diverse microgel types.
• Achieved tunable volume phase transition temperatures, including those near physiological conditions.

Conclusions:

• A novel microfluidic approach enables the creation of chemically consistent, morphologically diverse microgels.
• These microgels provide a versatile platform for developing soft, dynamic materials.
• The method supports applications in biomedicine requiring precise control over material properties and behavior.