Operation of semi-batch emulsion polymerisation reactors: Modelling, validation and effect of operating conditions

Zeaiter, J., Romagnoli, J. A., Barton, G. W., Gomes, V. G., Hawkett, B. S. and Gilbert, R. G (2002) Operation of semi-batch emulsion polymerisation reactors: Modelling, validation and effect of operating conditions. Chemical Engineering Science, 57 15: 2955-2969. doi:10.1016/S0009-2509(02)00253-1


Author Zeaiter, J.
Romagnoli, J. A.
Barton, G. W.
Gomes, V. G.
Hawkett, B. S.
Gilbert, R. G
Title Operation of semi-batch emulsion polymerisation reactors: Modelling, validation and effect of operating conditions
Journal name Chemical Engineering Science   Check publisher's open access policy
ISSN 0009-2509
Publication date 2002-01-01
Year available 2002
Sub-type Article (original research)
DOI 10.1016/S0009-2509(02)00253-1
Open Access Status Not yet assessed
Volume 57
Issue 15
Start page 2955
End page 2969
Total pages 15
Place of publication Oxford
Publisher Pergamon-elsevier Science Ltd
Language eng
Abstract A detailed dynamic model was developed for a styrene emulsion polymerisation semi-batch reactor to predict the evolution of the product particle size distribution (PSD) and molecular weight distribution (MWD) over the entire range of monomer conversion. A system exhibiting zero-one kinetics was employed, with the model comprising a set of rigorously developed population balance equations to predict monomer conversion, PSD and MWD. The modelling equations included diffusion-controlled kinetics at high monomer conversion where the transition from the zero-one regime to a pseudo-bulk regime occurs. The model predictions were found to be in good agreement with experimental results. Both particle growth and the PSD were found to be strongly affected by the monomer feedrate. Reactor temperature had a major influence on the MWD which was, however, insensitive to changes in the monomer feedrate. These findings were confirmed experimentally. As a result, it seems reasonable to propose that the use of the monomer feedrate to control the PSD and the reactor temperature to control the MWD are appropriate in practical situations. Consequently, an optimal monomer feed trajectory was developed off-line (using the validated reactor simulation) and verified experimentally by producing a polymer with specific PSD characteristics. (C) 2002 Published by Elsevier Science Ltd.
Keyword Engineering, Chemical
emulsion polymerisation
dynamic modelling
population balance
optimal control
particle size
particulate processes
Particle Formation
Polymerization
Copolymerization
Distributions
Styrene
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Centre for Nutrition and Food Sciences Publications
 
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Created: Thu, 20 Sep 2007, 01:37:21 EST