Characterization of Styrene–Butadiene Block Copolymers by Gel Permeation Chromatography
An important feature of linear and star-like styrene–butadiene block copolymers obtained by anionic polymerization is their composition. Pyrolysis gas chromatgraphy and Fourier transform infrared spectroscopy are reliable tools to ascertain the content of styrene and butadiene, respectively. The authors of this article propose a new way of determining the composition of styrene–butadiene copolymer samples using only gel permeation chromatography. They were able to obtain the molecular mass and composition by accounting for the corrections imposed by the different hydrodynamic volumes.
LCGC 17(12), 1110–1112,1115 (1999).
Inside the Laboratory: The Chromatography Laboratory at the University of Rouen
April 18th 2024In this edition of “Inside the Laboratory,” Pascal Cardinael and Valérie Agasse of the University of Rouen in Mont‑Saint-Aignan, France, discuss their laboratory’s work with miniaturizing gas chromatography (GC) columns and systems to improve on-site air analysis of volatile organic compounds (VOCs).
