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Titolo:
Near infrared (NIR) spectroscopy for in-line monitoring of polymer extrusion processes
Autore:
Rohe, T; Becker, W; Kolle, S; Eisenreich, N; Eyerer, P;
Indirizzi:
Fraunhofer Inst Chem Technol, D-76327 Pfinztal Berghausen, Germany Fraunhofer Inst Chem Technol Pfinztal Berghausen Germany D-76327 Germany
Titolo Testata:
TALANTA
fascicolo: 2, volume: 50, anno: 1999,
pagine: 283 - 290
SICI:
0039-9140(19990913)50:2<283:NI(SFI>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Keywords:
near infrared spectroscopy; polymer extrusion; in-line monitoring;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
7
Recensione:
Indirizzi per estratti:
Indirizzo: Rohe, T Fraunhofer Inst Chem Technol, Joseph Fraunhofer Str 7, D-76327 Pfinztal Berghausen, Germany Fraunhofer Inst Chem Technol Joseph Fraunhofer Str 7 Pfinztal Berghausen Germany D-76327
Citazione:
T. Rohe et al., "Near infrared (NIR) spectroscopy for in-line monitoring of polymer extrusion processes", TALANTA, 50(2), 1999, pp. 283-290

Abstract

In recent years, near infrared (NIR) spectroscopy has become an analyticaltool frequently used in many chemical production processes. In particular,on-line measurements are of interest to increase process stability and to document constant product quality. Application to polymer processing e.g. polymer extrusion, could even increase product quality. Interesting parameters are composition of the processed polymer, moisture, or reaction status in reactive extrusion. For this issue a transmission sensor was developed for application of NIR spectroscopy to extrusion processes. This sensor includes fibre optic probes and a measuring cell to be adapted to various extruders for in-line measurements. In contrast to infrared sensors, it only usesoptical quartz components. Extrusion processes at temperatures up to 300 degrees C and pressures up to 37 MPa have been investigated. Application of multivariate data analysis (e.g. partial least squares, PLS) demonstrated the performance of the system with respect to process monitoring: in the case of polymer blending, deviations between predicted and actual polymer composition were quite low (in the range of +/- 0.25%). So the complete system is suitable for harsh industrial environments and could lead to improved polymer extrusion processes. (C) 1999 Elsevier Science B.V. All rights reserved.

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Documento generato il 01/12/20 alle ore 20:00:54