Abstract
The chemical structural heterogeneities of two cationic acrylamide copolymers, methacryloxyethyl trimethylammonium chloride—acrylamide (AAM) and diallyldimethyl ammonium chloride—AAM, have been determined by high-performance liquid chromatography. In this method aqueous size-exclusion chromatography is combined with ion-exchange chromatography. Gradient elution with a sodium chloride solution is used. The resulting chromatogram shows the heterogeneity between polymer chains in solution. A comparison of the chromatograms of the original copolymer and its degradation product showed the heterogeneity along the copolymer chains.
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