Portal de Periódicos da CAPES

Chromatographic investigations of macromolecules in the critical range of liquid chromatography, XIII. Separation of blends of styrene-butadiene rubber and butyl rubber

1999; Wiley; Volume: 271; Issue: 1 Linguagem: Inglês

10.1002/(sici)1522-9505(19991101)271

1522-9505

K. Edwin Esser, Dietrich Braun, Harald Pasch,

Analytical Methods in Pharmaceuticals

Die Angewandte Makromolekulare ChemieVolume 271, Issue 1 p. 61-67 Research Article Chromatographic investigations of macromolecules in the critical range of liquid chromatography, XIII. Separation of blends of styrene-butadiene rubber and butyl rubber K. Edwin Esser, K. Edwin Esser Deutsches Kunststoff-Institut, Schlossgartenstr. 6, 64289 Darmstadt, GermanySearch for more papers by this authorDietrich Braun, Dietrich Braun Deutsches Kunststoff-Institut, Schlossgartenstr. 6, 64289 Darmstadt, GermanySearch for more papers by this authorHarald Pasch, Harald PaschSearch for more papers by this author K. Edwin Esser, K. Edwin Esser Deutsches Kunststoff-Institut, Schlossgartenstr. 6, 64289 Darmstadt, GermanySearch for more papers by this authorDietrich Braun, Dietrich Braun Deutsches Kunststoff-Institut, Schlossgartenstr. 6, 64289 Darmstadt, GermanySearch for more papers by this authorHarald Pasch, Harald PaschSearch for more papers by this author First published: 09 December 1999 https://doi.org/10.1002/(SICI)1522-9505(19991101)271:1 3.0.CO;2-VCitations: 18AboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstracten The separation of blends of styrene-butadiene rubber and butyl rubber is accomplished by liquid chromatography at the critical point of adsorption. Using a non-polar stationary phase and methyl ethyl ketone-cyclohexane as the eluent, the critical point of adsorption of polybutadiene is established. Under these chromatographic conditions, the blends are separated regardless of the molar masses of the components. The exact chemical structure of the blend components can be analysed by coupling the chromatographic separation to FTIR detection. The FTIR spectra of the components reveal information on the styrene and butadiene content and the conformation of the butadiene units (1,2-, 1,4-cis, 1,4-trans units). Poorly soluble high molar mass samples are separated by combining critical separation with a gradient elution technique. Abstractde Es wird ein Verfahren zur Auftrennung von Blends aus Styrol-Butadien-Kautschuk und Butylkautschuk durch Flüssigchromatographie am kritischen Punkt der Adsorption vorgestellt. Der kritische Punkt der Adsorption für Polybutadien wird auf einer unpolaren stationären Phase mit einem Eluenten aus Methylethylketon und Cyclohexan eingestellt. Die genaue chemische Zusammensetzung der Blendkomponenten wird durch Kopplung der chromatographischen Trennung mit der FTIR-Detektion bestimmt. Die FTIR-Spektren der Komponenten liefern Informationen zum Styrol- und Butadiengehalt und zur Konformation der Butadieneinheiten (1,2-, 1,4-cis, 1,4-trans-Einheiten). Schwerlösliche hochmolekulare Proben werden durch eine Kombination der kritischen Trennung mit der Gradientenelution aufgetrennt. Citing Literature Volume271, Issue1November 1999Pages 61-67 RelatedInformation