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Updated: Jun 5, 2025

Expansion of Two-dimension Electrospun Nanofiber Mats into Three-dimension Scaffolds
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Expandable Microspheres Transform 2D Electrospun Mats Into 3D Composite Scaffolds.

Huy Quang Tran1, Jingwei Xie1,2

  • 1Department of Surgery-Transplant and Mary & Dick Holland Regenerative Medicine Program, University of Nebraska Medical Center, Omaha, NE, 68198, USA.

Macromolecular Rapid Communications
|December 8, 2024
PubMed
Summary

Researchers developed a novel foaming method to create 3D microsphere-nanofiber composite structures from electrospun nanofibers. This technique enhances compressive strength, offering versatile applications in environmental, energy, and biomedical fields.

Keywords:
3D composite objects3D nanofiber scaffoldselectrospinningexpandable microspheresnanofiber mats

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Last Updated: Jun 5, 2025

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Biomaterials Engineering

Background:

  • Electrospun nanofibers are typically limited to 2D structures like mats and membranes.
  • Existing methods for creating 3D nanofiber scaffolds have limitations in compressive strength.

Purpose of the Study:

  • To develop a straightforward and adaptable method for fabricating 3D microsphere-nanofiber composite structures.
  • To enhance the mechanical properties, specifically compressive strength, of 3D nanofiber scaffolds.

Main Methods:

  • Incorporating expandable microspheres into nanofiber mats during electrospinning.
  • Utilizing thermal treatment to induce microsphere expansion and create 3D morphology.
  • Comparing compressive strength with scaffolds expanded using subcritical CO2 fluids.

Main Results:

  • Successfully fabricated 3D microsphere-nanofiber composite structures.
  • Expansion ratio and compressive strength increased with higher concentrations of expandable microspheres.
  • The novel 3D composite structures exhibited significantly higher compressive strength than CO2-expanded scaffolds.

Conclusions:

  • The presented foaming method is a promising approach for creating robust 3D microsphere-nanofiber composite scaffolds.
  • These 3D scaffolds offer broad potential applications in environmental, energy, and biomedical fields.
  • The enhanced mechanical properties make these structures suitable for demanding applications.