Gradient nanofiber non-woven
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United States of America Patent
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Nov 18, 2014
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app pub date -
Sep 29, 2010
filing date -
Sep 29, 2010
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Abstract
A gradient nanofiber non-woven contains a plurality of nanofibers where at least 70% of the nanofibers are bonded to other nanofibers. The nanofibers each have a surface and a center and contain a bulk polymer and a third component. The majority by weight at the surface of the nanofiber is the third component and the majority by weight at the center of the nanofiber is the bulk polymer and there is a concentration gradient from most concentrated to least from the surface of the nanofiber to the center of the nanofiber. The process for forming a gradient nanofiber non-woven is also disclosed.
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