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Improving agar electrospinnability with choline-based deep eutectic solvents.

Ana M M Sousa1, Hiléia K S Souza2, Joseph Uknalis3

  • 1REQUIMTE/LAQV, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal; Dairy Functional Food Research Unit, United States Department of Agriculture, Agricultural Research Service, Eastern Regional Research Center, 600 East Mermaid Lane, Wyndmoor, PA 19038, USA.

International Journal of Biological Macromolecules
|June 28, 2015
PubMed
Summary
This summary is machine-generated.

Researchers developed new agar fibers using a deep eutectic solvent (DES) for improved electrospinning. This method enhances fiber properties and opens possibilities for advanced agar-based materials.

Keywords:
AgarDeep eutectic solventsElectrospinningMicrofibersNanofibersPVA

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Biomaterials Engineering

Background:

  • Agar-based fibers are novel materials with potential applications.
  • Previous electrospinning of agar used water and polyvinyl alcohol (PVA).
  • Optimizing solvent systems is crucial for enhancing fiber properties.

Purpose of the Study:

  • To investigate deep eutectic solvent (DES) as an alternative solvent for agar electrospinning.
  • To produce pure agar nanofibers and agar/PVA composite fibers.
  • To characterize the properties and potential applications of the electrospun agar fibers.

Main Methods:

  • Electrospinning of agar using a (2-hydroxyethyl)trimethylammonium chloride/urea DES.
  • Collection of electrospun materials using an ethanol bath.
  • Characterization of fiber morphology, mechanical properties, and surface roughness.

Main Results:

  • Agar-in-DES showed improved viscoelasticity and spinnability compared to agar-in-water.
  • Pure agar nanofibers were successfully electrospun above the sol-gel transition temperature (∼80 °C).
  • Composite fibers with high agar content (50/50 and 30/70 agar/PVA) exhibited mechanical resistance and tailorable properties.

Conclusions:

  • DES is a viable alternative solvent for electrospinning agar.
  • The developed agar fibers, in nano and micro forms, show promise for advanced functional materials.
  • This work expands the possibilities for creating novel agar-based materials through optimized electrospinning techniques.