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Proceedings Paper

Determination of polymer end and functional groups by NIR spectrometry
Author(s): Sabine Haagen; Detlef Drosdziok; Gerd Reimann; Klaus Wueller; Joachim Oelichmann
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Paper Abstract

The knowledge of accurate hydroxyl and acid numbers as well as water content is of great value for process control and quality assurance in the polymer industry. Standard methods are lengthy procedures and require large quantities of chemicals. Therefore rapid and simple spectrometric determinations are preferable. Especially near-infrared spectrometry in combination with chemometric methods offers some distinct advantages for such applications. The properties of polyesters derived by principal components regression (PCR) are compared to results obtained from well-accepted standard methods. Good correlations are achieved for OH and COOH numbers and weaker, but still useful, correlations are also achieved for water content. Thus PCR of near-infrared spectra offers the potential to replace other methods of investigation that are time-consuming and expensive.

Paper Details

Date Published: 1 March 1992
PDF: 2 pages
Proc. SPIE 1575, 8th Intl Conf on Fourier Transform Spectroscopy, (1 March 1992); doi: 10.1117/12.56407
Show Author Affiliations
Sabine Haagen, Univ. Paderborn-GHS (Germany)
Detlef Drosdziok, Morton International GmbH (Germany)
Gerd Reimann, Morton International GmbH (Germany)
Klaus Wueller, Morton International GmbH (Germany)
Joachim Oelichmann, Bodenseewerk Perkin-Elmer GmbH (Germany)


Published in SPIE Proceedings Vol. 1575:
8th Intl Conf on Fourier Transform Spectroscopy

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