Process monitoring of polymers by in-line ATR-IR, NIR and Raman spectroscopy and ultrasonic measurements

Abstract The aim of the present work is to show that spectroscopic and ultrasonic methods are powerful in situ methods for monitoring polymerization processes and for the determination of the composition of polymer blends and additives during extrusion. Quantitative analysis carried out with chemometric methods can determine the composition of multicomponent polymer mixtures and predict real world samples in real-time during extrusion. Examples are the modification of hyperbranched poly(urea-urethane)s, the polymerization of MMA, the real-time determination of flame retardants in PA, and the determination of the composition of the blend PE/PS. To cite this article: D. Fischer et al., C. R. Chimie 9 (2006) .

[1]  G. Févotte,et al.  Robust on-line measurement of conversion and molecular weight using NIR spectroscopy during solution polymerization , 2002 .

[2]  On-Line Monitoring of Melt-Extrusion Transesterification of Ethylene Vinylacetate Copolymers by near Infrared Spectroscopy and Chemometrics , 2002 .

[3]  H. Edwards,et al.  Vibrational Spectroscopic and Ultrasound Analysis for In-Process Characterization of High-Density Polyethylene/Polypropylene Blends during Melt Extrusion , 2005, Applied spectroscopy.

[4]  Enrique Luis Lima,et al.  Control and design of average particle size in styrene suspension polymerizations using NIRS , 2000 .

[5]  I. Alig,et al.  Combination of NIR, Raman, Ultrasonic and Dielectric Spectroscopy for In-Line Monitoring of the Extrusion Process , 2005 .

[6]  A. Müller,et al.  New Strategy for the Synthesis of Halogen-Free Acrylate Macromonomers by Atom Transfer Radical Polymerization , 2001 .

[7]  D. Yan,et al.  “A2 + CBn” Approach to Hyperbranched Polymers with Alternating Ureido and Urethano Units , 2003 .

[8]  T. Bayer,et al.  In-line process monitoring on polymer melts by NIR-spectroscopy , 1997 .

[9]  H. Rehage,et al.  Methylmethacrylate On-Line Polymerisation Monitoring by Light-Fibre Fourier Transform near Infrared Transmission Spectroscopy and Fourier Transform Mid Infrared/Attenuated Total Reflection Spectroscopy , 2001 .

[10]  N. Eisenreich,et al.  Measurement of the Irganox Content in Polypropylene Polymers during Extrusion , 2005 .

[11]  John M. Chalmers.  Spectroscopy in process analysis , 2000 .

[12]  Yukihiro Ozaki,et al.  On-Line Monitoring of the Density of Linear Low-Density Polyethylene in a Real Plant by Near-Infrared Spectroscopy and Chemometrics , 2004, Applied spectroscopy.