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Biomaterials Based on Electrospun Chitosan. Relation between Processing Conditions and Mechanical Properties.

Christian Enrique Garcia Garcia1, Félix Armando Soltero Martínez2, Frédéric Bossard3

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Polymers
|April 11, 2019
PubMed
Summary

This study successfully electrospun chitosan nanofibers and films using poly (ethylene oxide) (PEO). Adding PEO improved the mechanical properties of chitosan materials, even after PEO removal.

Keywords:
PEO/chitosan blendmechanical propertiesswellingwet and dried states

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Area of Science:

  • Biomaterials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • Chitosan is a versatile biopolymer with applications in various fields.
  • Electrospinning is a common technique for producing nanofibers.
  • Improving the mechanical properties of chitosan-based materials is crucial for many applications.

Purpose of the Study:

  • To investigate the effect of poly (ethylene oxide) (PEO) on the electrospinning of chitosan.
  • To evaluate the influence of PEO on the swelling, hydrophilicity, and mechanical properties of chitosan nanofibers and films.
  • To explore the potential of PEO as a processing aid for chitosan-based nanomaterials.

Main Methods:

  • Chitosan/PEO blends were prepared in 0.5 M acetic acid.
  • Electrospinning was employed to produce nanofibers.
  • Neutralization and water washing were performed to remove PEO.
  • Swelling, hydrophilicity, and mechanical properties (DMA, uniaxial traction) were assessed.

Main Results:

  • Successful electrospinning of chitosan/PEO blends was achieved.
  • The presence of PEO influenced the degree of swelling and hydrophilicity.
  • Mechanical properties of chitosan nanofibers and films were enhanced with PEO addition (up to 70/30 chitosan/PEO ratio).
  • Improved mechanical properties were observed even after PEO extraction, attributed to better chitosan dispersion.

Conclusions:

  • Poly (ethylene oxide) acts as an effective processing aid for electrospinning chitosan.
  • PEO incorporation enhances the mechanical integrity of chitosan nanofibers and films.
  • The findings suggest a promising strategy for developing advanced chitosan-based nanomaterials with improved performance.