
<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:title>Solid State Shear Extrusion Pulverization</dc:title>
  <dc:creator>Ivanov, George</dc:creator>
  <dc:description>An apparatus for solid state shear extrusion pulverization of a polymeric material comprising an elongated hollow barrel having a feed zone, a heating zone adjacent to the feed zone, a powder formation zone adjacent to the heating zone, and a powder discharge zone adjacent to the powder formation zone. At least one screw is housed within the elongated hollow barrel. A hopper is provided for feeding the polymeric material into the feed zone of the elongated hollow barrel. Barrel heaters and coolers are provided for heating the polymeric material to a temperature less than its decomposition temperature in the heating zone and for maintaining the polymeric material below its melting point in the powder formation zone. The screw comprises a high shear screw section for applying normal and shear forces within the powder formation zone to form a powder of the solid state polymeric material.</dc:description>
  <dc:description>Sponsorship: Illinois Institute of Technology</dc:description>
  <dc:description>United States Patent</dc:description>
  <dc:date>2009-05-11</dc:date>
  <dc:date>1998-04-28</dc:date>
  <dc:type>Patent</dc:type>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>islandora:9769</dc:identifier>
  <dc:identifier>5,743,471</dc:identifier>
  <dc:identifier>http://hdl.handle.net/10560/2421</dc:identifier>
  <dc:language>en</dc:language>
  <dc:rights>No Copyright - United States</dc:rights>
  <dc:rights>http://rightsstatements.org/page/NoC-US/1.0/</dc:rights>
  <dc:rights>Open Access</dc:rights>
</oai_dc:dc>