1521-3900/asset/olbannerleft.gif?v=1&s=f7a64febbcca1c977a2bde0ee9f0bb1dd6cd21c7)
1521-3900/asset/olbannerright.gif?v=1&s=d594efe0924151884e9958416d79b0ceaa0b4adc)
Article
In-Situ Monitoring of Emulsion Polymerisations of MMA and Styrene Using Conductimetry and Calorimetry
Article first published online: 20 JUN 2005
DOI: 10.1002/masy.200550815
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Issue
1521-3900/asset/cover.gif?v=1&s=8b00f3e1eaf89f5c9e9dfe7beb4bad9a91aff1d5 "Macromolecular Symposia")
Macromolecular Symposia
Special Issue: Polymer Chemistry, Reactions and Processes
Volume 226, Issue 1, pages 157–166, May 2005
Additional Information
How to Cite
Santos, A.F., Pinto, J.C. and McKenna, T.F. (2005), In-Situ Monitoring of Emulsion Polymerisations of MMA and Styrene Using Conductimetry and Calorimetry. Macromol. Symp., 226: 157–166. doi: 10.1002/masy.200550815
Publication History
- Issue published online: 20 JUN 2005
- Article first published online: 20 JUN 2005
- Abstract
- Cited By
Keywords:
- conductivity;
- emulsion;
- monitoring;
- polymerisation;
- reactor
Abstract
In the present work, conductimetry is applied for on-line evaluation of anionic surfactant dynamics during emulsion polymerisation of methyl methacrylate and styrene and for on-line estimation of particle size and number. Reactor and jacket temperatures are used to perform energy balance computations on-line and to provide on-line evaluation of monomer conversion. The parameters of a previously proposed model are re-estimated in order to describe the conductivity signal during methyl methacrylate runs. Some important issues regarding the effects of the surfactant micelles over the conductivity signal are addressed. Finally, the model is inverted and combined with conversion and reactor temperature measurements, providing good predictions of the number of polymer particles in the latex, without needing of on-line measurements of particle size.