Temperature-Controllable Hydrogels in Double-Walled Microtube Structure Prepared by Using a Triple Channel...

Area of Science:

• Biomaterials Science
• Regenerative Medicine
• Microfluidics

Background:

• Hydrogels are promising for artificial tissues.
• Artificial blood vessels require precise structural control.
• Existing hydrogel microtubes lack dynamic volume regulation.

Purpose of the Study:

• To create temperature-responsive hydrogel microtubes.
• To achieve controllable wall diameters and hollow center volume.
• To mimic the structure and function of human blood vessels.

Main Methods:

• Utilized alginate-templated photopolymerization.
• Employed a triple-channel microfluidic device.
• Engineered separate thermally active inner and passive outer walls.

Main Results:

• Developed tubular hydrogels with tunable wall diameters.
• Demonstrated temperature-induced expansion of the hollow center volume.
• Showcased ability to modify outer diameter while preserving inner dimensions.

Conclusions:

• The novel hydrogels offer controllable lumen expansion, unlike conventional microtubes.
• This technology enables precise regulation of artificial vessel dimensions.
• The method allows for hydrogel modification with various monomers for diverse applications.