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Polyimide membranes

  • US 9,272,247 B2
  • Filed: 04/11/2012
  • Issued: 03/01/2016
  • Est. Priority Date: 04/11/2012
  • Status: Active Grant
First Claim
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1. A membrane comprising:

  • a plurality of electrospun polyimide fibers encased in an electrospun fluoroelastomer sheath, wherein the fluoroelastomer sheath has a curing temperature of from about 150°

    C. to about 360°

    C., the plurality of fibers having a diameter of from about 10 nm to about 50 microns, wherein the plurality of fibers form a permeable mat wherein the polyimide fibers are represented by

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