| Titre : |
Bulk polymerization of ε-caprolactone in twin screw extruder : A step toward the process control |
| Type de document : |
texte imprimé |
| Auteurs : |
J. Gimenez, Auteur ; M. Boudris, Auteur ; Philippe Cassagnau, Auteur ; A. Michel, Auteur |
| Année de publication : |
2000 |
| Article en page(s) : |
p. 20-27 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Index. décimale : |
668.9 Polymères |
| Résumé : |
The ε-caprolactone bulk polymerisation, initiated by tetrapropoxy 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. |
| Note de contenu : |
- CHEMICAL AND RHEOLOGICAL ASPECT OF THE POLYMERISATION : Chemical aspect mechanism - Rheological modelling - Principle of the slit rheometer - Extrusion experiments - Modelling of the pressure at steady regime - Modelling of the process dynamic - A step toward the process control |
| DOI : |
10.3139/217.1570 |
| En ligne : |
https://drive.google.com/file/d/1pXWwG8pK9Buq9npNlWRCOQ3CuHnrZ5un/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16070 |
in INTERNATIONAL POLYMER PROCESSING > Vol. XV, N° 1 (03/2000) . - p. 20-27
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Bulk polymerization of ε-caprolactone in twin screw extruder in INTERNATIONAL POLYMER PROCESSING, Vol. XV, N° 1 (03/2000)
