Related Experiment Video
Updated: Jun 19, 2026
Synthesis of Soft Polysiloxane-urea Elastomers for Intraocular Lens Application
Published on: March 8, 2019
Polybutadiene-graft-polystyrene copolymer: Grafting quantification by liquid chromatography at critical conditions
Christophe Galindo1, Emmanuel Beaudoin, Didier Gigmes
1UMR 6264 CNRS-Universities of Aix-Marseilles I, II and III, Laboratoire Chimie Provence, 13397 Marseilles Cedex 20, France.
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.
