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Gel permeation chromatography of soluble poly electrolytes part 1 peculiarities of the elution behavior of synthetic poly electrolytes in amide solvents



Gel permeation chromatography of soluble poly electrolytes part 1 peculiarities of the elution behavior of synthetic poly electrolytes in amide solvents



Journal of Chromatography 170(1): 11-24



The elution behavior of some aliphatic and aromatic polyacids and their derivatives in N,N'-dimethylformamide and N,N'-dimethylacetamide was investigated by gel permeation chromatography on Styragels and macroporous glasses. An abnormally high dependence of the shape of the chromatographic peak and the velocity of the polyelectrolyte zone on the polyelectrolyte concentration in the sample and on the column length was found. The phenomenon of stable association of macromolecules of oligoacids in a pure solvent up to a concentration of 0.005 g/dl was established. The mechanism of the formation of the polyelectrolyte zone and the possibility of applying gel permeation chromatography to the investigation of conformational transformations in poly-ions are discussed.

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Accession: 005507254

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