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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
Author(s) -
Van Uum Marinus P. B.,
Lammers Hans,
De Kleijn Jaap P.
Publication year - 1995
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1995.021960621
Subject(s) - poly ethylene , ethylene , infrared spectroscopy , materials science , infrared , spectroscopy , dimethyl terephthalate , polymer chemistry , calibration , analytical chemistry (journal) , polyester , chemistry , composite material , organic chemistry , optics , statistics , mathematics , physics , quantum mechanics , catalysis
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.