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Bulk Polymerization of ∊-Caprolactone in Twin Screw Extruder

A Step Toward The Process Control
  • J. Gimenez , M. Boudris , P. Cassagnau and A. Michel
Published/Copyright: June 6, 2013
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International Polymer Processing
From the journal International Polymer Processing Volume 15 Issue 1

Abstract

The ∊-caprolactone bulk polymerisation, initiated by tetra-propoxy titanium, was investigated in a co-rotating twin screw extruder. On the basis of pressure measurements, the process dynamic modelling was achieved. The pressure drop at the exit die of the extruder was correlated to the rheological behaviour of the melt polycaprolactone owing to equations which characterise the flow inside the die. The residence time distribution modelling was determined with an in-line Ultra-Violet fluorescence method. Thus, the combination of both modellings leads to the process dynamic modelling. This work constitutes the basis for an approach of the process regulation by the way of an internal model control. Simulation has given good results. However, the large response time to the control, relative to the process dynamic, constitutes effectiveness limiting factor for experimental control of the process.

* Mail address: Prof. Dr. P. Cassagnau, Laboratoire d'Etudes des Matériaux Plastiques et des Biomatériaux, CNRS UMR 5627, Université Claude Bernard Lyon I, 43 Bd. du 11 Novembre 1918, F-69622, Villeurbanne, Cedex
Received: 1999-7-18
Accepted: 1999-10-11
Published Online: 2013-06-06
Published in Print: 2000-03-01

© 2000, Carl Hanser Verlag, Munich

Articles in the same Issue

  1. Editorial
  2. Sixth of a Series: Pioneer of Man-Made Fibers and Solution Spinning Louis-Marie-Hilaire Bernigaud, Comte de Chardonnet
  3. Screw Extrusion
  4. A Network Analysis of a Screw Mixing Zone
  5. Experimental and Numerical Study of Rhomboidal Mixing Sections
  6. Reactive Extrusion
  7. Bulk Polymerization of ∊-Caprolactone in Twin Screw Extruder
  8. Die Extrusion
  9. Computer Aided Optimisation of Profile Extrusion Dies
  10. Fibers and Films
  11. An Investigation of Venturi and Coanda Effects in Blown Film Cooling
  12. Blends
  13. Solidification Behaviour of PA6/iPP Blends at High Cooling Rates
  14. Polymer Blends with Fibrillar Phase Morphology Prepared by Self-Reinforcing Technique
  15. Molding
  16. Compressive Squeeze Flow of Generalized Newtonian Fluids with Apparent Wall Slip
  17. Comparative Study of Ziegler-Natta and Metallocene Based Polypropylenes in Injection Molding
  18. The Pressure-Volume-Temperature Behavior Polyethylene Melts
  19. Evaluation of the Thermal Behaviour of Injection Moulds
  20. Polymer Solidification under Pressure and High Cooling Rates
https://doi.org/10.3139/217.1570

Articles in the same Issue

  1. Editorial
  2. Sixth of a Series: Pioneer of Man-Made Fibers and Solution Spinning Louis-Marie-Hilaire Bernigaud, Comte de Chardonnet
  3. Screw Extrusion
  4. A Network Analysis of a Screw Mixing Zone
  5. Experimental and Numerical Study of Rhomboidal Mixing Sections
  6. Reactive Extrusion
  7. Bulk Polymerization of ∊-Caprolactone in Twin Screw Extruder
  8. Die Extrusion
  9. Computer Aided Optimisation of Profile Extrusion Dies
  10. Fibers and Films
  11. An Investigation of Venturi and Coanda Effects in Blown Film Cooling
  12. Blends
  13. Solidification Behaviour of PA6/iPP Blends at High Cooling Rates
  14. Polymer Blends with Fibrillar Phase Morphology Prepared by Self-Reinforcing Technique
  15. Molding
  16. Compressive Squeeze Flow of Generalized Newtonian Fluids with Apparent Wall Slip
  17. Comparative Study of Ziegler-Natta and Metallocene Based Polypropylenes in Injection Molding
  18. The Pressure-Volume-Temperature Behavior Polyethylene Melts
  19. Evaluation of the Thermal Behaviour of Injection Moulds
  20. Polymer Solidification under Pressure and High Cooling Rates
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