Diffusion and sizes of micelles in polymer solutions and gels

  • J.-E. Löfroth
  • P. Hedberg
  • L. Johansson
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 93)


The sizes and self-diffusion coefficients of the non-ionic micellar systems octaethylene- and hexaethylene glycol mono n-dodecylether, C12E8 and C12E6, respectively, were studied in gels and solutions of the polyelectrolyte gk-carrageenan in water as functions of polymer and surfactant concentration at 25°C. A recently presented tracer technique [1] was used to determine the self-diffusion coefficient of the surfactant monomer, free or in the aggregated state. The time-resolved fluorescence quenching technique was used to determine aggregation numbers of the micellar aggregates giving the number average aggregation numbers and the standard deviations [2]. The polydispersity was analyzed assuming a Schultz distribution [3] of the aggregation numbers.

Key words

Diffusion micelle polymer gel 


  1. 1.
    Johansson L, Löfroth JE (1991) J Coll Interface Science 142:116CrossRefGoogle Scholar
  2. 2.
    Almgren M, Löfroth JE (1982) J Chem Phys 76:2734CrossRefGoogle Scholar
  3. 3.
    Magid LJ (1987) In: Schick MJ (ed) Nonionic Surfactants, Physical Chemistry, Marcel Dekker, NY; Surfactant Science Series vol 23:677Google Scholar
  4. 4.
    Cichocki B, Hinsen K (1990) Physica A 166:473CrossRefGoogle Scholar
  5. 5.
    Jonströmmer M, Jönsson B, Lindman B (1991) J Phys Chem 95:3293CrossRefGoogle Scholar
  6. 6.
    Johansson L, Skantze U, Löfroth JE (1991) Macromolecules 24:6019CrossRefGoogle Scholar
  7. 7.
    Johansson L, Elvingson C, Löfroth JE (1991) Macromolecules 24:6024CrossRefGoogle Scholar
  8. 8.
    Jönsson B, Wennerström H, Nilsson PG, Linse P (1986) Colloid Polymer Sci 264:77CrossRefGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1993

Authors and Affiliations

  • J.-E. Löfroth
    • 1
  • P. Hedberg
    • 1
  • L. Johansson
    • 1
  1. 1.Drug Delivery ResearchAstra Hässle ABMölndalSweden

Personalised recommendations