Electric birefringence of nonionic micellar solutions near the cloud point

Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 73)


“New Trends in Colliod Science” contains the proceedings of the foundation meeting of the European Colloid and Interface Society (ECIS), October 1–3, 1986. Representatives from the major European groups working in this field contributed to the conference. The volume contains an up-to-date account of present developments in Colloid Science. The contributions cover a wide scope of subjects, and provide encouragement that structures and transport processes in dense colloidal systems can be understood on basic principles. The main subjects are include:
  • phase diagrams of new surfactant systems

  • microemulsions and their applications

  • vesicles and bilayers

  • transport properties of colloidal systems.


The Kerr coefficient B of aqueous solutions of the nonionic amphiphiles C6E3, C8E 4, C10E5 and C12E6 is measured as a function of the temperature T in a temperature region close to the cloud point, and at the concentration corresponding to the minimum of the cloud curve. In all the investigated systems B is found to increase as T approaches the critical temperature T c following a power-law behavior, B≈(T c T) ψ , with an exponent ψ≈0.9. In the case of the system C12E6-H2O which was studied in a wide temperature range, the data are consistent with a moderate micellar growth as a function of T.

Key words

Electric birefringence micelles critical phenomena 


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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1987

Authors and Affiliations

  1. 1.Dipartimento di Elettronica-Sezione die Fisica ApplicataUniversità di PaviaPaviaItaly

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