title: Polybutadiene-graft-polystyrene copolymer: Grafting quantification by liquid chromatography at critical conditions using single UV detection.
abstract: We propose a fast, reliable chromatographic method to determine the grafting yield of a Polybutadiene-graft-Polystyrene (PB-g-PS) copolymer synthesized in our laboratory for High Impact Polystyrene applications. We used Liquid Chromatography at Critical Conditions of PS to separate non-grafted PS from graft product and ungrafted PB. Separation between grafted copolymer and non-grafted PS was very efficient and thanks to linearity of UV-detector response, we could quantify the amount of grafted PS in the copolymer, as well as calculate the grafting yield. Results shown here are for DOW BR1202D high-cis PB and BASF CB529T low-cis PB, Luperox TBIC M75 initiator at 8 x 10(-4) mol L(-1) and 125 degrees C reaction temperature.
authors.affiliation: UMR 6264 CNRS-Universities of Aix-Marseilles I, II and III, Laboratoire Chimie Provence, 13397 Marseilles Cedex 20, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Galindo
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Beaudoin
authors.forename: Didier
authors.initials: D
authors.lastname: Gigmes
authors.forename: Denis
authors.initials: D
authors.lastname: Bertin
mesh_terms: D002070:Butadienes / Q000737:chemistry*; D002850:Chromatography, Gel / Q000379:methods*; D020724:Elastomers / Q000737:chemistry*; D019906:Nuclear Magnetic Resonance, Biomolecular; D011108:Polymers / Q000138:chemical synthesis*; D011137:Polystyrenes / Q000737:chemistry*
chemical_list: D002070:Butadienes; D020724:Elastomers; D011108:Polymers; D011137:Polystyrenes; C028834:polybutadiene