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Electrospinning Cheat Sheet

No. Observation Possible Cause Remedy
1. No electrospinning jet Solvent used is non-conductive Dope solution with higher conductivity or dielectric constant.
Coagulation at nozzle tip See point 2.
2. Coagulation at nozzle tip Too rapid evaporation Use solvent of lower boiling point.
Dope solution with solvent with higher boiling point.
Use gas jacket.
Add electrospinnable polymer to form a blend.
Gelling Switch to a solvent that does not cause the solution to gel up.
Increase voltage.
Add electrospinnable polymer to form a blend.
Increase solution temperature.
Use annular gas jacket to facilitate jet initiation
3. Visible electrospinning jet but no fibers Solution concentration or molecular weight is too low Increase concentration or molecular weight.
Use co-axial electrospinning
Blend polymer with electrospinnable polymer
Insufficient viscosity
4. Visible electrospinning jet but fibers are not depositing on collector Collector is non-conductive Replace collector.
For thin collector sheet, place conductive electrodes under collector.
Blow ionized air on collector
5. Multiple jets at nozzle tip High solution conductivity Replace solvent with one of lower conductivity.
Use smaller diameter nozzle
6. Wet fibers Fibers are not sufficiently dry when deposited. Switch to more volatile solvents.
Increase the distance between nozzle and collector.
7. Bundling of electrospinning jet Polarization of electrical charges on electrospinning jet. Switch to solvent with lower conductivity.
Change collector plate to one that is less conductive.
Use a rotating collector.
Increase humidity of electrospinning environment.
Published date: 23 June 2015
Last updated: -

 

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