Nanostructured article and method of making the same
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United States of America Patent
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Mar 15, 2011
Grant Date -
Jan 18, 2007
app pub date -
Jul 14, 2005
filing date -
Jul 14, 2005
priority date (Note) -
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Abstract
A method of making nanostructured polymeric film includes: providing a tool having a porous anodized aluminum surface or a metallic replica thereof, wherein the average depth of the pores and the average pore width fall with specified ranges; forming a continuous layer of thermoplastic polymer selected from cellulose esters, poly alpha-olefins, and combinations thereof on at least a portion of the surface of the tool such that the continuous layer extends into the pores of the surface; separating the continuous layer from the tool as a film having nanofibrils formed on a major surface of the tool, the surface of the tool having a fluorocarbon release agent thereon, or the continuous layer comprising a fluorocarbon melt additive, or both. Nanostructured films are also disclosed.
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