On the Interaction of Lecithin Vesicles with Chaotropic Ions

  • T. Pigor
  • R. Lawaczeck


The intervesicular interaction between lecithin vesicles and chaotropic ions is described. The action of these ions leads to a precipitation of vesicles and at the same time to an increase of the turbidity. The tendency to induce this precipitation increases for monovalent anions in the following order: Cl < CH3COO < NO 3 < N 3 < Br < SCN < I < C1O 4 . The interpretation of the cations-effect is less straightforward. The ions-effect decreases with increasing temperature and does not show any significant change at the phase-transition temperature. A flocculation and/or aggregation of vesicles is discussed as origin for the observed ions-effect. Fusion processes seem to be slow and not predominant.


Structure Breaking Monovalent Anion Dialysis Experiment Vesicle Solution Vesicle Concentration 
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Copyright information

© Springer Science+Business Media New York 1985

Authors and Affiliations

  • T. Pigor
    • 1
  • R. Lawaczeck
    • 1
  1. 1.Institute of Physical ChemistryUniversity of WürzburgWürzburgGermany

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