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Frog tongue-inspired wettable microfibers for particles capture.

Jiahui Guo1, Lingyu Sun1, Han Zhang1

  • 1Department of Rheumatology and Immunology, Nanjing Drum Tower Hospital, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, China.

Science Bulletin
|December 7, 2024
PubMed
Summary

Inspired by frog tongues, novel porous microfibers efficiently capture airborne particles for enhanced mask filtration. These frog-tongue-inspired microfibers offer superior particle capture and air permeability in masks.

Keywords:
BioinspiredMaskMicrofiberMicrofluidicsWettability

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Area of Science:

  • Materials Science
  • Biomimetic Engineering
  • Nanotechnology

Background:

  • Fibers are crucial for industrial mask production, with ongoing research focused on enhancing filtration performance.
  • Developing microfibers with superior functions is key to improving mask efficiency.

Purpose of the Study:

  • To propose novel porous wettable microfibers inspired by the frog's predation mechanism for efficient airborne particle capture.
  • To investigate the wettability of these microfibers for optimal interfacial adhesion properties.

Main Methods:

  • Utilizing microfluidics to spin porous microfibers dispersed with oil droplets from polyurethane (PU) via quick phase inversion.
  • Investigating microfiber wettability under full, partial, and no oil coverage conditions.
  • Implementing 3D patterned networks of microfibers in mask prototypes.

Main Results:

  • Successfully spun porous microfibers with oil droplets using a co-flow microfluidic device.
  • Demonstrated remarkable particle capture performance in masks utilizing the 3D patterned networks.
  • Maintained good air permeability in masks with the novel microfiber design.

Conclusions:

  • Frog-tongue-inspired porous wettable microfibers offer efficient particle capture for air filtration.
  • The developed microfibers and derived masks show practical significance for various applications.
  • Biomimetic design provides a promising avenue for advanced filtration materials.