Near Infrared Reflection Spectroscopy: A Versatile Tool for Rapid Characterization of Olefin Copolymers and High-Throughput Experiments
✍ Scribed by Arno Tuchbreiter; Bernd Kappler; Roger Stockmann; Rolf Mülhaupt; Josef Honerkamp
- Publisher
- John Wiley and Sons
- Year
- 2003
- Tongue
- English
- Weight
- 143 KB
- Volume
- 288
- Category
- Article
- ISSN
- 1438-7492
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✦ Synopsis
Abstract
Near infrared (NIR) spectroscopy was developed as a rapid analytical method for the determination of the composition of olefin copolymers obtained in high‐throughput screening. NIR spectra of ethene/propene and ethene/1‐hexene copolymers, also characterized by means of ^13^C NMR spectroscopy, were recorded and used to design multivariate calibration models. Different methods for the preprocessing of the spectra, including the linearization by non‐linear transformations, were compared. Optimal methods and error estimates were established using crossvalidation. This technique is of particular interest for the rapid on‐line analysis of high‐throughput experiments in the field of polymer and catalyst design employing methods from combinatorial chemistry.
Predicted versus true value of the propene incorporation and standard deviation for ethene/propene copolymers.
magnified imagePredicted versus true value of the propene incorporation and standard deviation for ethene/propene copolymers.