Flow and mixing efficiency characterisation in a CO2-assisted single-screw extrusion process by residence time distribution using Raman spectroscopy

@inproceedings{Common2014FlowAM,
  title={Flow and mixing efficiency characterisation in a CO2-assisted single-screw extrusion process by residence time distribution using Raman spectroscopy},
  author={Audrey Common and Elisabeth Rodier and Martial Sauceau and Jacques Fages},
  year={2014}
}
Hot-melt extrusion of a bio-sourced polyamide has been implemented in a single-screw extruder with supercritical carbon dioxide injection. CO2 acts as a plasticiser in the extruder barrel and as a physical blowing agent at the die. To insure a better mixing and dissolution of the CO2 into the polymer melt, addition of a static mixer between the screw tip and the die was tested. The effect of both the static mixing element and the CO2 injection on the melt flow behaviour has been elucidated. A… CONTINUE READING
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