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Electrospinning of Well-Aligned P(VDF-TrFE) Fibers Using a Benign Solvent.

Shaashwat Saraff1, Kalyan Ghosh1, Thiyagarajan Natarajan1

  • 1Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, United Kingdom.

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Summary

Researchers identified methyl propyl ketone (MPK) as a safe, non-toxic solvent for electrospinning poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) fibers. This green electrospinning method yields high-quality, uniform fibers with a stable, consistent process.

Keywords:
P(VDF‐TrFE)alignment quality metricselectrospinningfunctional polymersgreen solventshealth and safetypiezoelectricity

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Green Chemistry

Background:

  • Poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) is a key piezoelectric polymer utilized in fibrous membranes.
  • Conventional electrospinning of P(VDF-TrFE) relies on toxic solvents, posing risks to health and the environment.
  • A need exists for safer, effective solvents to balance process stability, fiber quality, and safety in P(VDF-TrFE) electrospinning.

Purpose of the Study:

  • To identify a safe, non-toxic, and effective solvent for electrospinning P(VDF-TrFE) fibers.
  • To establish a facile, consistent protocol for producing high-quality P(VDF-TrFE) fibers using a benign solvent.
  • To investigate the impact of solvent properties and electrospinning parameters on fiber characteristics.

Main Methods:

  • Screening of various organic solvents across different chemical families for P(VDF-TrFE) electrospinning.
  • Evaluation of solvent safety, boiling point, and evaporation rate for process stability and fiber quality.
  • Optimization of electrospinning parameters using the selected benign solvent (methyl propyl ketone).

Main Results:

  • Methyl propyl ketone (MPK) was identified as an ideal, non-toxic solvent for P(VDF-TrFE) electrospinning.
  • MPK exhibits an optimal evaporation rate, contributing to process stability and high-quality fiber formation.
  • Uniform, distinct, and well-aligned electrospun P(VDF-TrFE) fibers were successfully produced using MPK.
  • The study provides a detailed protocol for consistent and stable green electrospinning of P(VDF-TrFE).

Conclusions:

  • Methyl propyl ketone (MPK) offers a safe and effective alternative to toxic solvents for P(VDF-TrFE) electrospinning.
  • This research enables the production of high-quality piezoelectric polymer fibers through a green and sustainable process.
  • The developed protocol opens avenues for advanced applications of P(VDF-TrFE) in areas prioritizing environmental and health safety.