Advertisement

Sodium dodecylsulfate-poly(ethyleneoxide) Interactions studied by time-resolved fluorescence quenching

  • J. van Stam
  • M. Almgren
  • C. Lindblad
Micelles
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 84)

Abstract

The interaction between sodium dodecylsulfate (SDS) and poly(ethyleneoxide) (PEO) has been studied by time-resolved fluorescence quenching at 20°C and 40°C in the dilute regime, i.e., 0.2% w/v, and in the semi-dilute regime, i.e., 2% w/v, with respect to PEO. Lifetime measurements show that PEO wraps around the micelle-like cluster formed by SDS upon interaction with PEO — the polymer shields the probe, pyrene, from quenching by bulk water solbuilized oxygen. The aggregation number determined at the SDS-concentration when interadtion starts, CAC, is much lower than predicted by current theory. As the surfactant concentration is increased, the aggregation number is simultaneously increased in the dilute regime, but remains constant at low additions of SDS in the semi-dilute regime. This indicates a certain number of locations for the clusters on the polymer chain. At CAC clusters are formed at these locations. Added surfactant is consumed by forming new clusters until all locations are filled in competition with the growth of excisting clusters.

Key words

Fluorescence quenching sodium dodecylsulfate poly(ehtyleneoxide) interactions aggregation numbers 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Nagarajan R (1985) Coll and Surf 13:1–17CrossRefGoogle Scholar
  2. 2.
    Ruckenstein E, Huber G, Hoffmann H (1987) Langmuir 3:382–387CrossRefGoogle Scholar
  3. 3.
    Jones MN (1967) J Coll Int Sci 23:36–42CrossRefGoogle Scholar
  4. 4.
    Schwuger MJ (1972) J Coll Int Sci 43:491–498CrossRefGoogle Scholar
  5. 5. a)
    Cabane B (1977) J Phys Chem 81:1639–1645CrossRefGoogle Scholar
  6. 5. b)
    Cabane B, Duplessix R (1982) J Phys 43:1529–1542CrossRefGoogle Scholar
  7. 5. c)
    Cabane B, Duplessix R (1985) Coll and Surf 13:19–33CrossRefGoogle Scholar
  8. 5. d)
    Cabane B, Duplessix R (1987) J Phys 48:651–662CrossRefGoogle Scholar
  9. 6. a)
    Zana R, Lianos P, Lang J (1985) J Phys Chem 89:41–44CrossRefGoogle Scholar
  10. 6. b)
    Zana R, Lang J, Lianos P (1985) In; Dubin P (ed) Microdomains in polymer solutions Plenum Press, New York and London, pp 357–368Google Scholar
  11. 7.
    Winnik FM, Winnik MA (1990) Pol J 22:482–488CrossRefGoogle Scholar
  12. 8.
    Goddard ED (1986) Coll and Surf 19:255–300CrossRefGoogle Scholar
  13. 9.
    Thalberg K, van Stam J, Lindblad C, Almgren M, Lindman B, J Phys Chem, acceptedGoogle Scholar
  14. 10.
    Almgren M, Alsins J, van Stam J, Mukhtar E (1988) Progr colloid Polym Sci 76:68–74CrossRefGoogle Scholar
  15. 11.
    Almgren M, Löfroth J-E, van Stam J (1986) J Phys Chem 90:4431–4437CrossRefGoogle Scholar
  16. 12.
    almgren M (1990) In: Grätzel M, Kalyanasundaram K (eds) Kinetics and Catalysis in Microheterogenous Systems. Marcel Dekker, New York, in pressGoogle Scholar
  17. 13.
    Zana R (1987) In: Zana R (ed) Surfactants in solutions. New Methods of Investigation. Surfactant Science Series, vol. 22. Marcel Dekker, New York and Basel, pp 241–294Google Scholar
  18. 14.
    Infelta PP, Grätzel M, Thomas JK (1974) J Phys Chem 78:190–195CrossRefGoogle Scholar
  19. 15.
    Handbook of Chemistry and Physics 64th ed (1984) The Chemical Rubber Company, Boca Raton, FloridaGoogle Scholar
  20. 16.
    Lianos P, Viriot M-L, Zana R (1984) J Phys Chem 88:1098–1101CrossRefGoogle Scholar
  21. 17.
    Malliaris A (1987) J Phys Chem 91:6511–6515CrossRefGoogle Scholar
  22. 18.
    Lindman B, Puyal M-C, Kamenka N, Rymdén R, Stilbs P (1984) J Phys Chem 88:5048–5057CrossRefGoogle Scholar
  23. 19.
    Almgren M, Alsins J, Mukhtar E, van Stam J (1989) In: Knoche W, Schomäcker R (eds) Reactions in Compartmentalized Liquids. Springer Verlag, Berlin, pp 61–68CrossRefGoogle Scholar
  24. 20.
    Kalyanasundaram K, Thomas JK (1977) J Am Chem Soc 99:2039–2044CrossRefGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1991

Authors and Affiliations

  • J. van Stam
    • 1
  • M. Almgren
    • 1
  • C. Lindblad
    • 1
  1. 1.Department of Physical ChemistryUppsala UniversityUppsalaSweden

Personalised recommendations