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We use electrospinning technique
to obtain nanofibers mainly as scaffolds for tissue engineering.
Electrospun nanofibers can improve cell
adhesión and growth, and direct the migration of cells.
The equipment consists of an injection pump, syringe,
needle, high voltage power supply and collector plate.
The polymer solution is pumped to the tip of the needle.
An electric field is created between the tip of the needle and
the collector plate by applying high voltage in the system.
When the surface tension in the liquid droplet is overcome by the
force of the electric field, the droplet is distorted forming the so-called
Taylor cone. The distorsion leads to an electrically
charged jet ejection that moves towards the collector,
thus forming thin fibers. When a rotating collector is used,
aligned polymer fibers are generated.
And...