Online Monitoring of Vinyl Chloride Polymerization in a Microreactor Using Raman Spectroscopy

Abstract : A novel capillary-based microfluidic device has been designed to follow the vinyl chloride polymerization reaction. The use of a co-flow generation system enabled obtaining monodisperse vinyl chloride droplets within 200 µm in diameter, each one being considered as a polymerization reactor. During polymerization VCM droplets were visualized with a high speed camera. At the end of the reaction PVC grains were observed with a Scanning Electron Microscopy technique. Real-time non-invasive Raman measurement has been performed on stationary vinyl chloride monomer droplets and has provided values of effective reaction orders n and effective rate constants k. This microdevice allowed the investigation in difficult conditions (pressure, temperature) with a minimal amount of reagents and consequently under safe conditions.
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Submitted on : Friday, October 19, 2012 - 11:14:27 AM
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Miruna Dorobantu Bodoc, Laurent E. Prat, Catherine Xuereb, Christophe Gourdon, Thierry Lasuye. Online Monitoring of Vinyl Chloride Polymerization in a Microreactor Using Raman Spectroscopy. Chemical Engineering and Technology, Wiley-VCH Verlag, 2012, vol. 35, pp.705-712. ⟨10.1002/ceat.201100564⟩. ⟨hal-00743489⟩

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