Melting phenomena in polymer blending

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

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review


This paper focuses on melting process in polymer blends. A barrel sliding mechanism and a perturbation method were used to study melting behavior of polypropylene/polystyrene, PP/PS blends in a twin screw extruder (TSE). It was found most melting occurred in the transition from partially filled region to fully filled region. Numerical modeling was used to obtain heat transfer coefficient of a solid polymer pellet in another polymer melt. A good match between simulation and experiment was found after taking thermocouple dynamics into account. The deformation and breakup of PC drop in PE melt under shear flow was studied experimentally and numerically. Stress peaks at the interface explained the "erosion" mechanism found in the experiment and simulations.

Original languageEnglish
Number of pages6
StatePublished - 2005
Externally publishedYes
EventSociety of Plastics Engineers Annual Technical Conference 2005, ANTEC 2005 - Boston, MA, United States
Duration: 1 May 20055 May 2005


ConferenceSociety of Plastics Engineers Annual Technical Conference 2005, ANTEC 2005
Country/TerritoryUnited States
CityBoston, MA


  • Deformation
  • Heat transfer
  • Melting
  • Twin-screw extrusion


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