Extrusion of BaSO4 filled medical-grade thermoplastic polyurethane

Guangyu Lu, Dilhan M. Kalyon, Iskender Yilgör, Emel Yilgör

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations

Abstract

Extrudability of 20% (vol.) BaSO4 filled medical-grade (additive free) thermoplastic polyurethanes was investigated. Filled TPU exhibits decreased shear viscosity and elasticity in comparison to unfilled TPU, generating reduced pressure drop at the die and reduced pressurization in the extruder. The moisture remaining in the BaSO4 may hydrolyze the polymer. However, hydrolysis is not sufficient and air, entrained with the filler into the extruder, reduces the viscosity and elasticity of the compounded TPU.

Original languageEnglish
Pages273-277
Number of pages5
StatePublished - 2003
Event61st Annual Technical Conference ANTEC 2003 - Nashville, TN, United States
Duration: 4 May 20038 May 2003

Conference

Conference61st Annual Technical Conference ANTEC 2003
Country/TerritoryUnited States
CityNashville, TN
Period4/05/038/05/03

Keywords

  • BaSO
  • Extrusion
  • TPU
  • Thermoplastic polyurethane

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