High temperature interaction chromatography of olefin copolymers
Date
2009
Authors
Pasch H.
Albrecht A.
Bruell R.
Macko T.
Hiller W.
Journal Title
Journal ISSN
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Abstract
The synthesis and characterization of polyolefins continues to be one of the most important areas for academic and industrial polymer research. One consequence of the development of new "tailor-made" polyolefins is the need for new and improved analytical techniques for the analysis of polyolefins with respect to molar mass and chemical composition distribution. The present article briefly reviews different new and relevant chromatographic techniques for polyolefin analysis. For the fast analysis of the chemical composition distribution of polyolefins a new hightemperature gradient high-performance liquid chromatography (HPLC) system has been introduced. The efficiency of this system for the separation of various olefin copolymers is demonstrated. The correlation between elution volume and chemical composition can be accessed by on-line coupling of high temperature HPLC with FTIR spectroscopy. For the elucidation of the chemical composition as a function of molar mass high-temperature size exclusion chromatography and 1H-NMR spectroscopy can be coupled. It is shown that the on-line NMR analysis of chromatographic fractions yields information on microstructure and chemical composition in addition to molar mass distribution. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
Description
Keywords
Analytical techniques, Chemical composition distributions, Chemical compositions, Chromatographic techniques, Elution volumes, FTIR spectroscopy, High temperature, High-temperature gradient, High-temperature interaction, Industrial polymers, LC-FTIR coupling, LC-NMR coupling, Molar mass distribution, NMR analysis, NMR spectroscopy, Olefin copolymers, On-line coupling, Synthesis and characterization, Chromatographic analysis, Copolymerization, Copolymers, Fourier transform infrared spectroscopy, High performance liquid chromatography, High pressure liquid chromatography, Liquids, Molecular structure, Nuclear magnetic resonance, Nuclear magnetic resonance spectroscopy, Olefins, Polyethylenes, Size exclusion chromatography
Citation
Macromolecular Symposia
282
1
282
1