Title
In line monitoring of residual monomer by NIR spectroscopy during styrene-divinylbenzene solution polymerization reactions
Date Issued
16 October 2011
Access level
metadata only access
Resource Type
conference paper
Author(s)
Universidad de São Paulo
Publisher(s)
AIChE
Abstract
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 and 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.
Start page
1071
End page
1076
Volume
2
Language
English
OCDE Knowledge area
Ciencia de los polímeros
Electroquímica
Subjects
Scopus EID
2-s2.0-85054868743
Resource of which it is part
Materials Engineering and Sciences Division - Core Programming Topic at the 2011 AIChE Annual Meeting
ISBN of the container
978-161839729-4
Conference
Materials Engineering and Sciences Division - Core Programming Topic at the 2011 AIChE Annual Meeting
Sponsor(s)
The financial support from FAPESP (Fundação de Amparo à Pesquisa do Estado de São Paulo) and CNPq (Conselho Nacional de Desenvolvimento Científico e Tecnológico) is gratefully appreciated. The authors also thank BASF Brazil for providing monomer.
Sources of information:
Directorio de Producción Científica
Scopus