Colloid and Polymer Science

, Volume 270, Issue 8, pp 822–824 | Cite as

On the shape of giant micelles in aqueous solutions of cetyltrimetylammoniumbromide (CTAB)

  • T. Wolff
  • C. -S. Emming
  • G. von Bünau
  • K. Zierold
Original Contributions


Low-temperature electron microscopy was used to image fracture faces of shock-frozen aqueous solutions containing the very large micelles of CTAB existing in the presence of N-methyl-N,N-diphenylamine (MDPA) and 9-anthracene carboxylic acid (9-AC) as solubilizates. When MDPA is present, large globular micelles are formed which have total aggregation numbers of the order of 105 and are seen to be clusters of smaller disc-like structures containing some thousand CTAB-units. Thread-like features are visualized in solutions containing 9-AC which is known to induce the formation of micellar rods.

Key words

Low-temperature electronmicroscopy shape ofmicelles solubilization cetyltrimethylammonium bromide N-methyl-N,N-diphenylamine 


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Copyright information

© Steinkopff-Verlag 1992

Authors and Affiliations

  • T. Wolff
    • 1
  • C. -S. Emming
    • 1
  • G. von Bünau
    • 1
  • K. Zierold
    • 2
  1. 1.Universitätsinstitut für Physikalische ChemieSiegenFRG
  2. 2.Max-Planck-Institut für SystemphysiologieDortmundFRG

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