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Sedimentation equilibrium studies of synthetic polyelectrolytes by means of interference optical methods

  • E. GörnitzEmail author
  • M. Hahn
  • W. Jaeger
  • H. Dautzenberg
Polymers, Colloids, And Supramolecular Systems
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 107)

Abstract

Synthetic quaternary ammonium polyelectrolytes have been investigated in aqueous 0.5 M NaCl solution by analytical ultracentrifugation using the “low speed” sedimentation equilibrium technique with interference detection. Lower molecular mass poly(diallyldimethylammonium chloride) (poly-DADMAC)-samples (M W<105 g/mol) and poly(methacryloyloxyethylbenzyl-dimethylammonium chloride) (poly-MADAMBQ) exhibit “ideal” sedimentation equilibrium behavior. Linear log [η] vs. log M W — and log s O vs. log M W relations could be derived for poly-MADAMBQ. For higher molecular mass poly-DADMAC (M W>105 g/mol) and DADMAC-acrylamide copolymers a “non-ideal” solution behavior was observed resulting in deviations between molecular masses M w obtained by sedimentation equilibrium and by elastic light scattering. The experimental conditions desired for the molecular characterization of synthetic polyelectrolytes by sedimentation equilibrium are discussed.

Key words

Quaternary ammonium polyelectrolytes molecular mass analytical ultracentrifugation sedimentation equilibrium light scattering 

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References

  1. 1.
    Dautzenberg H, Jaeger W, Kötz J, Philipp B, Seidel CH, Stscherbina D (1994) Polyelectrolytes: Formation, Characterization, Application. Karl Hanser Publ., Munich, Chap. 5.Google Scholar
  2. 2.
    Dautzenberg H, Jaeger W, Kötz J, Philipp B, Seidel Ch, Stscherbina D (1994) Polyelectrolytes: Formation, Characterization, Application. Karl Hanser Publ., Munich, Chap. 1, p. 11 ff and references thereinGoogle Scholar
  3. 3.
    Hahn M, Jaeger W (1992) Ang Makromol Chem 198:165CrossRefGoogle Scholar
  4. 4.
    Huang PC, Reichert K-H (1989) Ang Makromol Chem 162:19CrossRefGoogle Scholar
  5. 5.
    Wandrey Ch, Görnitz E (1992) Acta Polymer 43:320CrossRefGoogle Scholar
  6. 6.
    Brand F (1995) PhD Thesis, Tech Univ, BerlinGoogle Scholar
  7. 7.
    Brand F, Dautzenberg H, Jaeger W, Hahn M (1997) Ang Makromol Chem 248:41CrossRefGoogle Scholar
  8. 8.
    Zimmermann A (1996) PhD Thesis, Tech Univ, BerlinGoogle Scholar
  9. 9.
    Fujita H (1975) Foundations of Ultra-centrifugal Analysis. Wiley, New YorkGoogle Scholar
  10. 10.
    Lechner MD, Mächtle W (1992) Makromol Chem, Macromol Symp 61:165Google Scholar
  11. 11.
    Sticker M (1984) Ang Makromol Chem 123/124:85CrossRefGoogle Scholar
  12. 12.
    Xia J, Dubin PL, Edwards S, Havel H (1995) J Polym Sci, B: Polym Phys 33:1117CrossRefGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1997

Authors and Affiliations

  • E. Görnitz
    • 1
    Email author
  • M. Hahn
    • 1
  • W. Jaeger
    • 1
  • H. Dautzenberg
    • 2
  1. 1.Fraunhofer-Institute of Applied Polymer ResearchTeltowGermany
  2. 2.Max-Planck-Institute of Colloid and Surface ScienceTeltowGermany

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