title: Comprehensive Microstructure and Molar Mass Analysis of Polybutadiene by Multidimensional Liquid Chromatography.
abstract: For the first time, polybutadiene is separated according to microstructure using solvent gradient interaction chromatography (SGIC). Superior separation of polybutadienes having different microstructures is obtained on a silica-based reversed stationary phase and a mobile phase of acetone-hexane. This SGIC system enables the baseline separation of 1,2-polybutadienes and 1,4-polybutadienes even in cases where the samples have similar molar masses. 2D liquid chromatography is performed with the SGIC method separating according to microstructure in the first dimension coupled to size exclusion chromatography separating according to molar mass in the second dimension, thus providing comprehensive information on both microstructure and molar mass.
authors.affiliation: Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, Stellenbosch, South Africa.
authors.forename: Khumo
authors.initials: K
authors.lastname: Maiko
authors.affiliation: Department of Chemistry and Polymer Science, University of Stellenbosch, Private Bag X1, Matieland, 7602, Stellenbosch, South Africa.
authors.forename: Harald
authors.initials: H
authors.lastname: Pasch
mesh_terms: D002070:Butadienes / Q000737:chemistry*; D002853:Chromatography, Liquid; D020724:Elastomers / Q000737:chemistry*
chemical_list: D002070:Butadienes; D020724:Elastomers; C028834:polybutadiene
keywords: 2D chromatography; microstructure; polybutadiene; solvent gradient interaction chromatography