Skip to content
Licensed Unlicensed Requires Authentication Published by De Gruyter June 3, 2013

A Dynamic Model Accounting for Oscillating Behavior in Reactive Extrusion

  • L. P. B. M. Janssen , P. F. Rozendal , H. W. Hoogstraten and M. Cioffi


A qualitative mathematical model on the oscillating behavior of reactive extrusion is presented. Through the introduction of stagnant volume build up in the die as a result of the ongoing reactive extrusion process, a variable time dependent die resistance emerges. A differential equation for the waxing and waning of stagnant volume in the die is developed. This equation is able to give oscillating behavior for certain extruder parameters and viscosity when coupled to an existing dynamic model of the fully-filled length. The effects of reaction rate, rotational speed, feed rate, die resistance and degree-of-fill are studied.

* Mail address: L. P. B. M. Janssen, Dept. of Chem. Eng., Groningen University, Nijenborgh 4, 9747 AG Groningen, The Netherlands

Received: 2003-4-17
Accepted: 2003-4-26
Published Online: 2013-06-03
Published in Print: 2003-09-01

© 2003, Carl Hanser Verlag, Munich

Downloaded on 9.6.2023 from
Scroll to top button