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).Next Generation Peak Fitting for Separations
July 9th 2024Separation scientists frequently encounter critical pairs that are difficult to separate in a complex mixture. To save time and expensive solvents, an effective alternative to conventional screening protocols or mathematical peak width reduction is called iterative curve fitting.