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Separation of Parent Homopolymers from Diblock Copolymers by Liquid Chromatography under Limiting Conditions of Desorption, 2 - Optimization of Experimental Arrangement

✍ Scribed by Dušan Berek

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
270 KB
Volume
209
Category
Article
ISSN
1022-1352

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✦ Synopsis

Abstract

The experimental arrangement for liquid chromatography under limiting conditions of desorption was optimized, aiming at separation of the parent homopolymers from diblock copolymers. Measurements with the block copolymer PS‐b‐PMMA have confirmed that the method enables fast and efficient separation of both parent homopolymers PS and PMMA from the copolymers in a single run. The new experimental set‐up also allows the separation of potentially present low molecular or oligomeric admixtures from the polymeric constituents of sample. The peak broadening of the non‐retained macromolecules has been suppressed. The sample recovery is high and can be easily checked by the injection of a large volume of an appropriate displacer.

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