Polymer Characterization Using SEC-FTIR

Infrared spectroscopy combined with size exclusion chromatography has found wide acceptance in the study of deformulation of samples of unknown origin, compositional distribution in copolymers, impurity profiling in polymers, and branching in polyolefins. Use of this technique is enhanced by the ava...

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Bibliographic Details
Published inInternational journal of polymer analysis & characterization Vol. 4; no. 1; pp. 21 - 29
Main Authors Willis, James N., Dwyer, James L., Liu, Michael X.
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.10.1997
Subjects
FTIR
SEC
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Summary:Infrared spectroscopy combined with size exclusion chromatography has found wide acceptance in the study of deformulation of samples of unknown origin, compositional distribution in copolymers, impurity profiling in polymers, and branching in polyolefins. Use of this technique is enhanced by the availability of new commercial instrumentation and by software that speeds data analysis. The new instruments are off-line solvent removal devices that provide samples in a simple, solvent free condition that are compatible with existing FTIR instrumentation. Two solvent removal approaches are described; a pneumatic nozzle and an ultrasonic/vacuum nebulizer. Both systems speed sample preparation and both work with the normal sampling methods and concentration levels expected in SEC. The utility of this technique is demonstrated using as an example a commercial adhesive sample.
ISSN:1023-666X
1563-5341
DOI:10.1080/10236669708033934