In line monitoring of residual monomer by nir spectroscopy during styrene-divinylbenzene solution polymerization reactions

Dennis Chicoma Lara, María Verónica Carranza Oropeza, Leandro Gonçalves De Aguiar, Reinaldo Giudici

Research output: Contribution to conferencePaper

Abstract

© 2011 by AIChE. All rights reserved. In this work, the sensitivity of NIR spectroscopy was studied for in-line, in-situ monitoring of residual monomer concentrations in solution copolymerization of styrene and divinylbenzene (S-DVB). Reactions were carried out in a glass reactor (stirred tank) to gather data used to develop a NIR calibration model. Experimental data were collected via off-line measurements of monomer conversion by gravimetry and they were previously validated with a kinetic model of the process. These data were correlated with the NIR spectra collected by an immersion probe (transflectance mode) during the reaction at the same sampling times. Spectral changes in the ranges 4460-4750 cm-1 6212-6187 cm-1 were related to the variations of monomer concentration. The results show good agreement between the experimental data and in-line monitoring predictions from the NIR spectra and the calibration model.
Original languageAmerican English
Pages1143-1148
Number of pages6
StatePublished - 1 Jan 2011
Externally publishedYes
EventCatalysis and Reaction Engineering Division - Core Programming Topic at the 2011 AIChE Annual Meeting -
Duration: 1 Jan 2011 → …

Conference

ConferenceCatalysis and Reaction Engineering Division - Core Programming Topic at the 2011 AIChE Annual Meeting
Period1/01/11 → …

Fingerprint Dive into the research topics of 'In line monitoring of residual monomer by nir spectroscopy during styrene-divinylbenzene solution polymerization reactions'. Together they form a unique fingerprint.

  • Cite this

    Lara, D. C., Oropeza, M. V. C., De Aguiar, L. G., & Giudici, R. (2011). In line monitoring of residual monomer by nir spectroscopy during styrene-divinylbenzene solution polymerization reactions. 1143-1148. Paper presented at Catalysis and Reaction Engineering Division - Core Programming Topic at the 2011 AIChE Annual Meeting, .