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Related Experiment Videos

Polycations as displacer in high-performance bioseparation.

B Schmidt1, C Wandrey, S Vogt

  • 1Institute of Chemical Engineering, Swiss Federal Institute of Technology Lausanne, Ecublens, Switzerland.

Journal of Chromatography. A
|February 16, 2000
PubMed
Summary

A new polymer, poly(diallyldimethylammonium chloride) (PolyDADMAC), is introduced as an efficient displacer for cation-exchange chromatography. This development aims to make displacement chromatography more accessible for preparative biochromatography applications.

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Area of Science:

  • Biochemistry
  • Polymer Chemistry
  • Chromatography

Background:

  • Displacement chromatography is a preparative biochromatography technique that is underutilized.
  • A key limitation is the scarcity of well-engineered and accessible displacer molecules.
  • This hinders the broader application of this powerful separation method.

Purpose of the Study:

  • To introduce a novel displacer molecule for cation-exchange displacement chromatography.
  • To describe a synthesis method for this new displacer.
  • To demonstrate its efficacy in protein separation.

Main Methods:

  • Synthesis of a well-defined poly(diallyldimethylammonium chloride) (PolyDADMAC) with specific molar mass (<35000 g/mol), linear structure, and low polydispersity (<1.5).

Related Experiment Videos

  • High-yield polymer synthesis protocol.
  • Application of PolyDADMAC as a displacer in cation-exchange chromatography for basic protein separation.

    • Main Results:

    • A novel, well-defined PolyDADMAC displacer was successfully synthesized with high yields.
    • The synthesized PolyDADMAC exhibits a controlled molar mass and exclusively linear structure.
    • PolyDADMAC effectively displaces basic proteins from strong cation-exchange columns.

    Conclusions:

    • Poly(diallyldimethylammonium chloride) (PolyDADMAC) is a viable and efficient displacer for cation-exchange displacement chromatography.
    • The development of this accessible displacer is expected to increase the use of displacement chromatography in biochromatography.
    • This novel displacer will soon be commercially available, facilitating its adoption.