Emulsion polymerisation in continuous reactor systems
β Scribed by Poehlein, Gary W.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1982
- Tongue
- English
- Weight
- 670 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0007-1641
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β¦ Synopsis
Abstract
Continuous reactor systems find important applications in the production of sythetic polymer latexes and increased production rates are providing additional incentives for the development of new continuous systems. The fundamental factors that should be considered in the development of continuous processes are reviewed in this paper. Particular emphasis is placed on exploring the differences between batch and continuous reactors and why these difference can lead to different latex product, even if the same recipe is employed. These factors make the task of designing continuous reactor systems based on batch research and development very difficult and risky. Thus it is recommended that smallβscale continuous reactors be employed early in a product/process development effort if that effort is likely to lead to a continuous commercial process.
The published literature on continuous emulsion polymerization reactors has been reasonably active in the past ten years. Our understanding of the chemistry and reactor modelling has been advanced but a number of areas for fruitful research remains. Some of these problems are reviewed and directions for new efforts are suggested.
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## It has been demonstrated earlier that a Pulsed Packed Column is a suitable reactor for continuous emulsion polymerisation of styrene. The emulsion polymerisation of viny2 acetate follows a different mechanism, which renders the process more liable to instabilities when carried out in a continuo
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The performance of a pulsed packed column (PPC) has been investigated for the continuous seeded emulsion copolymerisation of styrene and methyl acrylate. In the PPC, intensive radial mixing is combined with little axial mixing. Intensive local mixing provides proper emulsi"cation and high rates of h