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Solvent modulation in peptide sub-microfibers obtained by solution blow spinning.

Ana Margarida Gonçalves Carvalho Dias1,2, Cícero Cena3, Viviane Lutz-Bueno4,5

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Summary

Researchers developed a new method using solution blow-spinning to create peptide fibers. By adjusting solvents, they successfully produced different types of peptide-based sub-microfibers, advancing biomaterial fabrication.

Keywords:
peptide-based fiberspolymeric fibersself-assemblysolution blow-spinningsolvent modulation

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Peptides offer high chemical diversity and versatile functions.
  • Self-assembling peptides can form diverse bio-based materials.
  • Peptide-based spun fibers are promising due to high surface area but face processing challenges.

Purpose of the Study:

  • To demonstrate solution blow-spinning for producing peptide fibers.
  • To investigate the role of solvents and polymer assistance in peptide fiber formation.
  • To explore solvent modulation for creating different peptide sub-microfiber structures.

Main Methods:

  • Solution blow-spinning technique was employed.
  • Poly (vinyl pyrrolidone) (PVP) was used as a polymer assistant.
  • Two different solvent conditions (acetic acid and isopropanol) were tested.

Main Results:

  • Peptide fiber formation was achieved with PVP assistance.
  • Acetic acid solvent resulted in peptide fibers surrounding PVP fibers (0.5 μm peptide, 0.75 μm PVP).
  • Isopropanol solvent yielded mixed peptide-PVP fibers (1 μm diameter).

Conclusions:

  • Solvent modulation is a key strategy for controlling peptide sub-microfiber morphology via solution blow-spinning.
  • This method enables the production of distinct fiber structures from a single nozzle.
  • The approach is anticipated to be applicable to other self-assembling peptides for multi-functional materials.