Centrifugal electrospinning apparatus and methods and fibrous structures produced therefrom
A centrifugal electrospinning apparatus, centrifugal electrospinning method for the production of fibrous structures, and electrospun fibrous structures are provided.
1. An electrospinning apparatus, comprising:
(a) a nozzle configured to expel an electrospinning solution through a conductive tip to produce electrospun fibers;
(b) a rotator configured to rotate the tip through a rotation plane; and
(c) a plurality of deposition electrodes arranged in the rotation plane and configured to receive the electrospun fibers.
2. The electrospinning apparatus of claim 1 , wherein the plurality of deposition electrodes are grounded.
3. The electrospinning apparatus of claim 1 , wherein the plurality of deposition electrodes are arranged concentrically around the rotator.
4. The electrospinning apparatus of claim 1 , wherein the plurality of deposition electrodes are separated by insulating gaps.
5. The electrospinning apparatus of claim 1 further comprising a power supply configured to apply a first voltage to the conductive tip.
6. The electrospinning apparatus of claim 1 further comprising a non-conducting housing enclosing the nozzle, the rotator, and the plurality of deposition electrodes.
7. The electrospinning apparatus of claim 1 , wherein the nozzle is in liquid communication with a reservoir for the electrospinning solution.
8. The electrospinning apparatus of claim 1 further comprising a pressure source configured to apply pressure to the electrospinning solution and expel the solution from the nozzle.
9. The electrospinning apparatus of claim 1 , wherein the conductive tip has a voltage of about 1 to about 30 kV DC.
10. The electrospinning apparatus of claim 1 , wherein the plurality of deposition electrodes are from about 1 to about 24 cm from the conductive tip.
11. The electrospinning apparatus of claim 1 , wherein the rotator is configured to rotate at about 50 to 1000 rpm.
12. An electrospinning apparatus, comprising:
(a) a nozzle configured to expel an electrospinning solution through a conductive tip to produce electrospun fibers;
(b) a plurality of deposition electrodes arranged in a rotation plane and configured to receive the electrospun fibers; and
(c) a rotator configured to rotate the plurality of deposition electrodes through the rotation plane.
13. The electrospinning apparatus of claim 12 , wherein the plurality of deposition electrodes are grounded.
14. The electrospinning apparatus of claim 12 , wherein the plurality of deposition electrodes are arranged concentrically around the rotator.
15. The electrospinning apparatus of claim 12 , wherein the plurality of deposition electrodes are separated by insulating gaps.
16. The electrospinning apparatus of claim 12 further comprising a power supply configured to apply a first voltage to the conductive tip.
17. The electrospinning apparatus of claim 12 further comprising a non-conducting housing enclosing the nozzle and the plurality of deposition electrodes.
18. The electrospinning apparatus of claim 12 , wherein the nozzle is in liquid communication with a reservoir for the electrospinning solution.
19. The electrospinning apparatus of claim 12 further comprising a pressure source configured to apply pressure to the electro spinning solution and expel the solution from the nozzle.
20. The electrospinning apparatus of claim 12 , wherein the conductive tip has a voltage of about 1 to about 30 kV DC.