| DOI | Trouver le DOI : https://doi.org/10.1093/chromsci/25.6.231 |
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| Auteur | Rechercher : Noel, D.1; Rechercher : VanGheluwe, P.1 |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Résumé | Polyether polyols used in the manufacture of polyurethane foams are analyzed by reversed-phase liquid chromatography and size-exclusion chromatography. In reversed-phase liquid chromatography, a water-acetonitrile gradient elution method is developed using ultraviolet (UV) detection at 200 nm to analyze polyols. A deficient sample is quantitatively analyzed with a simultaneous subtraction of the gradient baseline from the sample chromatogram. High-speed reversed-phase liquid chromatography using a column 5 cm in length packed with 3-µm particles decreases the separation time to less than 6 min, compared to 35 min using a conventional column 25 cm in length packed with 5-µm particles. A deficiency of high molecular weight compounds in an industrial polyol-glycol mixture is detected by highperformance size-exclusion chromatography using a single poly(styrene/divinylbenzene) column with tetrahydrofuran as eluent. Separation of polyether polyols is achieved in less than 8 min in an isocratic mode. |
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| Date de publication | 1987-06-01 |
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| Maison d’édition | Oxford |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 4017f677-9c40-4b30-a640-c59d05dc3a0a |
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| Enregistrement créé | 2023-09-26 |
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| Enregistrement modifié | 2023-09-26 |
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