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Separation of Parent Homopolymers from Diblock Copolymers by Liquid Chromatography under Limiting Conditions Desorption, 1 ‐ Principle of the Method
Author(s) -
Berek Dušan
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700540
Subject(s) - copolymer , elution , polymer , solvent , limiting , chemistry , macromolecule , desorption , chromatography , molecule , polymer chemistry , organic chemistry , adsorption , biochemistry , engineering , mechanical engineering
A novel group of liquid chromatographic methods was developed, namely liquid chromatography under limiting conditions of enthalpic interactions (LC LC). LC LC utilizes the difference in the elution rates of the slow, pore permeating small solvent molecules and the fast traveling pore excluded macromolecules. The appropriately chosen small molecules create a barrier, which selectively promotes enthalpic interactions of one kind of polymer chains within the chromatographic system and thus blocks their fast elution. The non‐interacting polymer chains elute rapidly. Two different barriers enable simultaneous separation of both parent homopolymers from a diblock copolymer.