Investigation of mixing mechanisms and energy balance in reactive extrusion using three-dimensional numerical simulation method

Document Type

Article

Publication Date

7-1-2005

Abstract

The polymerization of ε-caprolactone in fully-filled conveying elements of co-rotating twin-screw extruders was analyzed with three-dimensional numerical simulation method. The effects of screw rotational speed, geometry of screw element, and initial conversion at the channel inlet on polymerization progression were studied. The simulation results show that polymerization is accelerated with increasing screw pitch, due to the increase in mixing intensity. With increasing screw rotational speed, the reaction could either slow down or speed up, depending on the viscosity of the reaction system. It is found that the advancement of polymerization depends on the competition among heat from reaction, viscous dissipation and heat loss through the wall surfaces. © 2005 Elsevier Ltd. All rights reserved.

Identifier

18844445081 (Scopus)

Publication Title

International Journal of Heat and Mass Transfer

External Full Text Location

https://doi.org/10.1016/j.ijheatmasstransfer.2004.12.049

ISSN

00179310

First Page

3411

Last Page

3422

Issue

16

Volume

48

This document is currently not available here.

Share

COinS