Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 1462, Issue -, Pages 63-72Publisher
ELSEVIER
DOI: 10.1016/j.chroma.2016.07.080
Keywords
Liquid chromatography under limiting conditions of desorption; Barriers efficiency; Polystyrene-b-poly(ethylene oxide)-b-polystyrene
Funding
- Aix-Marseille University
- CNRS
- Slovak Grant Agency APVV [0109-10]
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Liquid Chromatography under Limiting Conditions of Desorption (LC LCD) is a powerful separation tool for multicomponent polymer systems. This technique is based on a barrier effect of an appropriate solvent, which is injected in front of the sample, and which decelerates the elution of selected macromolecules. In this study, the barrier effects have been evaluated for triblock copolymers polystyrene-b-poly(ethylene oxide)-b-polystyrene (PS-b-PEO-b-PS) according to the content of polystyrene (wt% PS) and PEO-block molar mass. PS-b-PEO-b-PS samples were prepared by Atom Transfer Radical Polymerization (ATRP). The presence of respective parent homopolymers was investigated by applying optimized LC LCD conditions. It was found that the barrier composition largely affects the efficiency of separation and it ought to be adjusted for particular composition range of block copolymers. (C) 2016 Elsevier B.V. All rights reserved.
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