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Titolo:
On-line monitoring and composition control of the emulsion copolymerization of VeoVa 9 and butyl acrylate by Raman spectroscopy
Autore:
van den Brink, M; Pepers, M; van Herk, AM; German, AL;
Indirizzi:
Eindhoven Univ Technol, Technol Fac Chem & Chem, Dept Polymer Chem & Coatings, NL-5600 MB Eindhoven, Netherlands Eindhoven Univ Technol Eindhoven Netherlands NL-5600 MB ven, Netherlands
Titolo Testata:
POLYMER REACTION ENGINEERING
fascicolo: 2, volume: 9, anno: 2001,
pagine: 101 - 133
SICI:
1054-3414(2001)9:2<101:OMACCO>2.0.ZU;2-#
Fonte:
ISI
Lingua:
ENG
Soggetto:
NEAR-INFRARED SPECTROSCOPY; METHYL-METHACRYLATE; POLYMERIZATION REACTORS; NONLINEAR-REGRESSION; CO-POLYMERIZATION; COMPOSITION DRIFT; LATEX-PARTICLES; STYRENE; PERFORMANCE; MONOMERS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
73
Recensione:
Indirizzi per estratti:
Indirizzo: German, AL Eindhoven Univ Technol, Technol Fac Chem & Chem, Dept Polymer Chem & Coatings, POB 513, NL-5600 MB Eindhoven, Netherlands Eindhoven Univ Technol POB 513 Eindhoven Netherlands NL-5600 MB
Citazione:
M. van den Brink et al., "On-line monitoring and composition control of the emulsion copolymerization of VeoVa 9 and butyl acrylate by Raman spectroscopy", POLYM REACT, 9(2), 2001, pp. 101-133

Abstract

The batch and semi-continuous emulsion copolymerization of n-butyl acrylate and vinyl neononanoate (VeoVA 9) were monitored by remote on-line Raman spectroscopy. Monomer concentrations were calculated in real-time by a classical least squares (CLS) approach using the vinyl regions of the Raman spectra. During the batch copolymerization, conversion and copolymer composition calculated from on-line data showed good agreement with off-line gravimetry and NMR results, indicating that the CLS procedure indeed enables the calculation of individual monomer concentrations and on-line characterizationof the copolymer formed. Real-time analysis of the data enabled control ofthe copolymer composition by suggesting how one of the comonomers should be added in a semi-continuous polymerization. NMR and gradient polymer elution chromatography corroborated the Raman results for the cc,polymer composition. Further, it was shown that only at high conversions (> 80%) monomer partitioning influences the copolylmerization behavior, since both monomers have a low solubility in water. The results demonstrate that Raman spectroscopy is very well suited Is on-line sensor in emulsion copolymerization processes.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 10:58:25