Electrospinning process for manufacture of multi-layered structures
First Claim
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1. A method of forming a structure, the structure comprising a core including a first material and a sheath including a second material around said core, the method comprising the steps of:
- providing an apparatus, comprising;
a first wedge-shaped vessel having a first slit at an apex thereof, and including an electrically conductive material;
a second wedge-shaped vessel including a second slit at an apex thereof, wherein the first wedge-shaped vessel is disposed inside of the second vessel such that each of the first and second slits are aligned;
first and second fluid reservoirs containing the first and second materials, respectively, wherein the first and second fluid reservoirs are in fluid communication with the first and second wedge-shaped vessels, respectively; and
a voltage source configured to apply a voltage to at least one of the first and second materials;
activating the voltage source to apply a voltage of between 1 and 100 kV;
pumping the first fluid from the first fluid reservoir to the first wedge-shaped vessel; and
pumping the second fluid from the second fluid reservoir to the second wedge-shaped vessel.
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Abstract
Devices and methods for high-throughput manufacture of concentrically layered nanoscale and microscale fibers by electrospinning are disclosed. The devices include a hollow tube having a lengthwise slit through which a core material can flow, and can be configured to permit introduction of sheath material at multiple sites of Taylor cone formation.
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Citations
7 Claims
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1. A method of forming a structure, the structure comprising a core including a first material and a sheath including a second material around said core, the method comprising the steps of:
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providing an apparatus, comprising; a first wedge-shaped vessel having a first slit at an apex thereof, and including an electrically conductive material; a second wedge-shaped vessel including a second slit at an apex thereof, wherein the first wedge-shaped vessel is disposed inside of the second vessel such that each of the first and second slits are aligned; first and second fluid reservoirs containing the first and second materials, respectively, wherein the first and second fluid reservoirs are in fluid communication with the first and second wedge-shaped vessels, respectively; and a voltage source configured to apply a voltage to at least one of the first and second materials; activating the voltage source to apply a voltage of between 1 and 100 kV; pumping the first fluid from the first fluid reservoir to the first wedge-shaped vessel; and pumping the second fluid from the second fluid reservoir to the second wedge-shaped vessel. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification