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Process analysis: properties of poly(ethylene terephthalate) measured by near infrared spectroscopy, 1. At-line analysis of poly(ethylene terephthalate) chips

✍ Scribed by Marinus P. B. Van Uum; Hans Lammers; Jaap P. De Kleijn

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
299 KB
Volume
196
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

Near infrared (NIR) reflectance spectra recorded from poly(ethylene terephthalate) (PET) chips contain a sufficient amount of information to estimate the number of carboxylic end groups and the relative viscosity. To obtain reliable results, careful attention has to be paid to the calibration procedure.

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