Polyvinylidene fluoride (PVDF) can be challenging to electrospin due to its unique properties. Electrospinning involves the use of an electric field to draw a polymer solution or melt into ultrafine fibers. However, PVDF presents some difficulties in this process:

Dear Nguyen

PVDF is a very good polymer to to electrospinning. I don't know what conditions you have adopted. Generally DMF/Acetone solvent mixture is proper choice. Needle freezing most probably possible when your solution feed rate is excess. If the solution feed is high the excess solvent accumulated at the needle tip. For the prolonged time the excess droplets starts gets solidify and which interpret the spinning. For your reference please refer my publication.

Dear Nguyen Nga ,

It is relatively easy to electrospin PVDF. I think so you need to optimize the processing parameters like solution concentration, feed rate, applied electric field and the distance between the collector and spinneret. Also, at times the gauge size of the needle effects the processing. If your solution is drying at the tip of the needle then maybe work on the solution viscosity and the feed rate. The viscosity should not be much higher as then the solvent will evaporate faster and will stick at the needle tip. Same with the higher feed rate.

There are also many literatures available for electrospinning PVDF. Take reference from them.

Hope this helps!