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Two‐Dimensional Chromatography of Complex Polymers, 2. Analysis of the Grafting Reaction of Methyl Methacrylate onto EPDM
Author(s) -
Siewing Anja,
Schierholz Jens,
Braun Dietrich,
Hellmann Goetz,
Pasch Harald
Publication year - 2001
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 - 10.1002/1521-3935(20011001)202:14<2890::aid-macp2890>3.0.co;2-v
Subject(s) - copolymer , molar mass , polymer chemistry , methyl methacrylate , grafting , materials science , polymer , high performance liquid chromatography , natural rubber , methacrylate , elution , chemical engineering , chemistry , chromatography , composite material , engineering
The grafting reaction of methyl methacrylate onto ethene‐propene‐diene rubber (EPDM) is investigated by different chromatographic techniques, including HPLC and online‐coupled two‐dimensional liquid chromatography. As a result of the grafting reaction, a complex mixture of nongrafted EPDM, the graft copolymer EPDM‐ g ‐PMMA, and the PMMA homopolymer is formed. Using liquid chromatography at the critical point of adsorption, the PMMA homopolymer can be isolated, but a separation of the graft copolymer and EPDM is not possible. The complete separation of all components is achieved by gradient HPLC. Combining gradient HPLC and SEC in a fully automated 2D chromatography setup, the complex distributions of chemical composition and molar mass can be fingerprinted simultaneously.