On-line visualization of PS/PP melting mechanisms in a twin-screw extruder

Hongbing Chen*, Uttandaraman Sundararaj, Krishnaswamy Nandakumar, Mark D. Wetzel

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


The melting and deformation mechanisms of polystyrene (PS) and polypropylene (PP) blends were investigated through on-line visualization of the co-rotating twin-screw extrusion process. A sliding barrel technique was used to realize the on-line visualization with one glass window in the barrel. The axial temperature and pressure profiles along the screw channel were measured using the same sliding technique. Different melting mechanisms were found for the PP/PS (80:20) blend and PS/PP (80:20) blend.

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


Conference61st Annual Technical Conference ANTEC 2003
Country/TerritoryUnited States
CityNashville, TN


  • Extrusion
  • Melting
  • Polymer blends
  • Visualization


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