Polymer hollow fiber three-dimensional matrices with controllable cavity and shell thickness

Area of Science:

• Materials Science
• Biomaterials Engineering
• Polymer Science

Background:

• Hollow fibers have diverse applications, including tissue engineering scaffolds and drug delivery systems.
• Current fabrication methods lack the ability to simultaneously organize hollow fibers into 3D matrices for complex structures.

Purpose of the Study:

• To develop a novel technology for fabricating hollow fibers with controlled dimensions.
• To integrate hollow fiber fabrication with 3D matrix organization for advanced applications.

Main Methods:

• Exploiting viscous encapsulation during polymer extrusion to create shell-core fibers.
• Selective dissolution of the inner core polymer to form hollow fibers.
• Utilizing 3D fiber deposition for simultaneous organization into 3D matrices with custom architectures.

Main Results:

• Successfully fabricated hollow fibers with controllable hollow cavity diameter and shell thickness.
• Demonstrated control over fiber dimensions by adjusting polymer blend, composition, and nozzle diameter.
• Organized extruded fibers into various 3D matrix architectures using 3D fiber deposition.

Conclusions:

• The novel technology enables precise fabrication of hollow fibers and their organization into 3D matrices.
• This approach offers enhanced functionality for tissue engineering and controlled drug delivery applications.
• The method provides a versatile platform for creating complex, hierarchical structures with potential for advanced biomaterials.