Importance of coupling between specific energy and viscosity in the modeling of twin screw extrusion of starchy products.(Report): An article from: Polymer Engineering and Science

This digital document is an article from Polymer Engineering and Science, published by Society of Plastics Engineers, Inc. on September 1, 2010. The length of the article is 4023 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: During the twin extrusion process, starch basic structure is modified and it is very important to be able to predict the changes experienced by the product. To model the transformation of starch during twin screw extrusion, it is thus necessary to take into account the strong coupling between viscosity and thermomechanical treatment. It is the purpose of the present work. We have used the software Ludovic [c] to calculate the flow of a molten starch along a twin screw extruder. We have assumed that the degradation reaction (viscosity decrease) was linked to the specific mechanical energy received during the flow. We have compared extrusion cases with and without viscosity/energy coupling, and we show that it is important to take it into account to correctly predict the parameters of the extrusion process (torque, energy, product temperature, etc.) and the level of starch transformation. POLYM. ENG. SCI., 50:1758-1766, 2010. [c] 2010 Society of Plastics Engineers

Citation Details
Title: Importance of coupling between specific energy and viscosity in the modeling of twin screw extrusion of starchy products.(Report)
Author: Francoise Berzin
Publication:Polymer Engineering and Science (Magazine/Journal)
Date: September 1, 2010
Publisher: Society of Plastics Engineers, Inc.
Volume: 50 Issue: 9 Page: 1758(9)

Article Type: Report

Distributed by Gale, a part of Cengage Learning