Discrimination of block structures in liquid adsorption chromatography of polymers. Simulation and experiment.
Di- and triblocks can be separated from each other under adsorption conditions for the outer block and critical or exclusion conditions for the inner block. If the center block is uniform, even a separation according to symmetry can be achieved. This behavior is studied in much detail by theory and simulations as well as in the chromatographic experiments with block copolymers of ethylene oxide and ɛ-caprolactone.
Central Polymer Lab-Molecular Characteristics (CePOL/MC), Heinrichstrasse 28, Graz, Austria. Electronic address: bernd.trathnigg@uni-graz.at.
Bernd
B
Trathnigg
Institute for Highly Pure Biopreparations, Pudozhskaya 7, St. Petersburg, Russia.
Alexei A
AA
Gorbunov
D000327:Adsorption; D002853:Chromatography, Liquid / Q000379:methods*; D011108:Polymers / Q000737:chemistry*
D011108:Polymers
Block copolymer; Interaction parameter; Liquid chromatography; Symmetry