Macromolecular Chemistry and Physics · 2001 · 42 citations · 0 references
Natural SciencesChemistryMaterials ScienceChromatographic AnalysisPolymer ChemistryPolymer MaterialsAcrylic Resin MaterialsChromatographyLiquid ChromatographyPolymer AnalysisPolymer CharacterizationPolymerization ChemistryGraftingMolar MassMolecular Mass Distribution AnalysisPolymer GraftingPolymer SeparationPolymethyl MethacrylateTwo-dimensional Liquid ChromatographyTwo-dimensional Liquid Chromatography-mass Spectrometry
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.