Abstract
The application of near-infrared (NIR) spectroscopy to continuous monitoring of extrusion processes of polymers was demonstrated. NIR probes were adapted to the extruder outlet. The connection between probe and extruder was realized through a fiber-optic cable. The measurements utilized transmission or diffuse reflectance modes. Quantitative analysis was carried out using the chemometric methods of Partial Least Squares (PLS) and Principle Component Regression (PCR). Subjects of our investigations were the quantification of the composition of polymer blends (polypropylene/ethylene vinyl acetate copolymer) and the quantification of content of filler in polymer matrices (polypropylene/pulverized chalk) in the range of weight concentrations from 0 to 40%. The results show that NIR spectroscopy is suitable for quantitative in-line and real-time analysis of polymers.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
Author information
Authors and Affiliations
Additional information
Received: 25 October 1996 / Revised: 22 May 1997 / Accepted: 24 May 1997
Rights and permissions
About this article
Cite this article
Fischer, D., Bayer, T., Eichhorn, KJ. et al. In-line process monitoring on polymer melts by NIR-spectroscopy. Fresenius J Anal Chem 359, 74–77 (1997). https://doi.org/10.1007/s002160050538
Issue Date:
DOI: https://doi.org/10.1007/s002160050538