Heated solution electrospinning
AssigneeUniversity of Oregon
InventorsPaul D. Dalton, Ievgenii Liashenko
Life of this patent
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Abstract
Certain aspects of the disclosure concern a device including a nozzle configured to receive a heated polymer solution from a reservoir and a power supply configured to generate an electrostatic field between a tip portion of the nozzle and a substrate so as to draw a charged jet of the heated polymer solution out of the tip portion of the nozzle toward a substrate situated at an operating distance from the tip portion of the nozzle and form a polymer fiber on the substrate. The heated polymer solution is at an operating temperature that is greater than or equal to 40° C.
Claims20
A device comprising:
- a nozzle configured to receive a heated polymer solution from a reservoir;
- and
- a power supply configured to generate an electrostatic field between a tip portion of the nozzle and a substrate so as to draw a charged jet of the heated polymer solution out of the tip portion of the nozzle toward a substrate situated at an operating distance from the tip portion of the nozzle and form a polymer fiber on the substrate,
- wherein the heated polymer solution is at an operating temperature that is greater than or equal to 40° C.
A method comprising:
- heating a polymer solution to an operating temperature that is greater than or equal to 40° C.;
- electrospinning the polymer solution as a charged jet escaping from a nozzle;
- and
- collecting a polymer fiber on a substrate,
- wherein the polymer solution comprising a polymer dissolved in a solvent at the operating temperature,
- wherein the polymer fiber is formed from the charged jet after evaporation of at least some of the solvent.
A method comprising:
- preparing a polymer solution comprising polycaprolactone dissolved in dimethylformamide;
- heating the polymer solution to an operating temperature that is between 40° C. and 100° C., inclusive;
- feeding the polymer solution to a nozzle;
- applying an electrostatic field between a tip portion of the nozzle and a substrate spaced apart from the tip portion of the nozzle, wherein the electrostatic field is configured to draw a charged jet of the polymer solution out of the tip portion of the nozzle toward the substrate;
- and
- collecting a fiber on the substrate, wherein the fiber is formed from the charged jet after evaporation of at least some of the dimethylformamide.
Dependencies are inferred from the claim text.