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Article | REF: AM3654 V1

Reactive extrusion processes

Authors: Françoise BERZIN, Guo-Hua HU

Publication date: July 10, 2004

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AUTHORS

  • Françoise BERZIN: Engineer, École des Mines de Douai - Doctorate from the École des Mines de Paris - Senior Lecturer at the University of Reims Champagne-Ardenne

  • Guo-Hua HU: Doctorate from Université Louis-Pasteur, Strasbourg - Professor at the Institut National Polytechnique de Lorraine (Nancy) - Chemical Engineering Sciences Laboratory (CNRS-ENSIC)

 INTRODUCTION

Extrusion is a continuous process involving the shaping or transformation of polymers within a screw/sleeve system. With a few rare exceptions, the mechanisms involved are purely thermomechanical, and any chemical process is to be avoided a priori. Reactive extrusion is when chemical transformations are voluntarily generated in a controlled manner. The extruder then becomes a veritable continuous reactor. After a presentation of the specific features, advantages and disadvantages of using the extruder as a continuous reactor, the main applications of this technology in the field of synthetic or natural polymer materials will be illustrated with examples. The fundamental principles of the reactive extrusion process and the contribution of modeling to this type of process will then be described.

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