Optimization of Processing Conditions for Polymer Twin-screw Extrusion

Abstract

The problem of setting the best operating conditions of a co-rotating twin-screw extruder is solved using an optimization aproach based on Genetic Algorithms. Two possibilities are considered: i) the maximization of an objective function; ii) the simultaneous optimization of the individual criteria and the use of Pareto plots. The flow conditions inside the machine are simulated using Ludivic Software. Various practical case studies are discussed, among them a reactive extrusion aplication. Generally, the methodology is sensitive to the influence of the main process criteria and provides solutions that are apparently sound.