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Updated: May 28, 2026

Solution Blow Spinning of Polymeric Nano-Composite Fibers for Personal Protective Equipment
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Published on: March 18, 2021

Multifunctional Alginate Composite Fibers Based on Pre-Crosslinked Spinning Solutions.

Lingchun Liu1, Hanxu Zhou1, Cong Du1

  • 1Shandong Key Laboratory of Renewable Membrane Materials, College of Materials Science and Engineering, Qingdao University, Qingdao 266071, China.

Materials (Basel, Switzerland)
|May 27, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed new biodegradable alginate fibers using titanium dioxide nanoparticles. These enhanced green fibers offer superior mechanical strength and functionalities like formaldehyde degradation and flame retardancy.

Keywords:
composite fiberflame retardantformaldehyde degradationrheologysodium alginatetitanium dioxide nanoparticles

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Growing environmental pollution from microplastics and carbon emissions necessitates sustainable material solutions.
  • Biodegradable alginate fibers are promising green alternatives but face challenges in achieving high mechanical strength and specific functionalities.
  • Developing advanced alginate-based materials is crucial for environmental remediation and functional textiles.

Purpose of the Study:

  • To fabricate multifunctional alginate composite fibers with enhanced mechanical properties and specific functionalities.
  • To investigate the effect of incorporating titanium dioxide (TiO2) nanoparticles into sodium alginate (SA) fibers.
  • To establish a facile and continuous fabrication method for these advanced fibers.

Main Methods:

  • A one-step wet-spinning strategy was employed, incorporating pre-crosslinked sodium alginate (SA) with calcium ions (Ca2+) and titanium dioxide (TiO2) nanoparticles.
  • The rheological properties of the spinning solution were optimized for continuous fiber fabrication.
  • The content of TiO2 was systematically varied to optimize fiber morphology and performance.

Main Results:

  • The pre-crosslinking of SA with Ca2+ ensured favorable rheological performance for continuous wet spinning.
  • Optimized SA/TiO2 composite fibers displayed uniform morphology and significantly enhanced mechanical properties, with a breaking stress of 400 MPa and Young's modulus of 17.2 GPa.
  • The incorporated TiO2 nanoparticles imparted excellent formaldehyde degradation capabilities and rapid self-extinguishing properties to the fibers.

Conclusions:

  • The developed one-step wet-spinning method successfully produced multifunctional SA/TiO2 composite fibers with superior mechanical strength.
  • These fibers demonstrate significant potential for applications in formaldehyde removal and as flame-retardant textiles, contributing to sustainable material development.
  • The study highlights a viable approach to enhance biodegradable alginate fibers for advanced environmental and textile applications.