Krämer, Inge ; Hiller, Wolf ; Pasch, Harald (2000)
On-line coupling of gradient-HPLC and 1H NMR for the analysis of random poly[(styrene)-co-(ethyl acrylate)]s.
In: Macromolecular chemistry and physics, 201 (14)
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Random poly[(styrene)‐co‐(ethyl acrylate)]s can effectively be analysed with respect to the chemical composition distribution by on‐line coupled HPLC/1H NMR. The separation of the copolymers is conducted on a reversed‐phase column using acetonitrile/tetrahydrofuran as the eluent mixture. Via on‐line coupling, the chromatographic peaks are directly transferred into the NMR spectrometer and analysed on‐flow. Information on the chemical composition and the chemical heterogeneity of copolymers with high conversion is obtained. The experiments have been carried out using conventional HPLC‐grade solvents and no deuterium lock. The results of the on‐line HPLC/1H NMR investigation have been correlated with a HPLC procedure based on calibration with narrow‐distributed copolymer standards.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2000 |
| Autor(en): | Krämer, Inge ; Hiller, Wolf ; Pasch, Harald |
| Art des Eintrags: | Bibliographie |
| Titel: | On-line coupling of gradient-HPLC and 1H NMR for the analysis of random poly[(styrene)-co-(ethyl acrylate)]s |
| Sprache: | Englisch |
| Publikationsjahr: | 2000 |
| Verlag: | Wiley-Blackwell |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Macromolecular chemistry and physics |
| Jahrgang/Volume einer Zeitschrift: | 201 |
| (Heft-)Nummer: | 14 |
| Kurzbeschreibung (Abstract): | Random poly[(styrene)‐co‐(ethyl acrylate)]s can effectively be analysed with respect to the chemical composition distribution by on‐line coupled HPLC/1H NMR. The separation of the copolymers is conducted on a reversed‐phase column using acetonitrile/tetrahydrofuran as the eluent mixture. Via on‐line coupling, the chromatographic peaks are directly transferred into the NMR spectrometer and analysed on‐flow. Information on the chemical composition and the chemical heterogeneity of copolymers with high conversion is obtained. The experiments have been carried out using conventional HPLC‐grade solvents and no deuterium lock. The results of the on‐line HPLC/1H NMR investigation have been correlated with a HPLC procedure based on calibration with narrow‐distributed copolymer standards. |
| Fachbereich(e)/-gebiet(e): | Zentrale Einrichtungen ?? fb99_deutsches-kunststoffinstitut ?? |
| Hinterlegungsdatum: | 19 Nov 2008 16:25 |
| Letzte Änderung: | 20 Feb 2020 13:28 |
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