Dynamics of water in nonionic amphiphile systems: raman scattering

  • D. Majolino
  • F. Mallamace
  • N. Micali
  • M. Corti
  • V. Degiorgio
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 93)


The structure of water in aqueous solutions of polyoxyethylene nonionic amphiphiles C10E5 is studied by Raman scattering along an isothermal path crossing the isotropic one-phase region from 0 to 1 amphiphile volume fraction φ. The isotropic OH stretching vibration spectrum evidences a behavior that depends on the amphiphile concentration. The interpretation of such scattering data leads to the following structural picture for the water in the systems; for φ lower than 0.75, water is partially bound to the oxyethylene groups of the amphiphile; above φ=0.75 all water present in the system is bound. The structure of such bound water presents a local, low dense, four coordinated environment.

Key words

Water amphiphile raman scattering vibrational dynamics 


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Copyright information

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

Authors and Affiliations

  • D. Majolino
    • 3
  • F. Mallamace
    • 3
  • N. Micali
    • 1
  • M. Corti
    • 2
  • V. Degiorgio
    • 2
  1. 1.Instituto di Tecniche Spettroscopiche del C N R MessinaItaly
  2. 2.Dipartimento di ElettronicaUniversita’ di PaviaItaly
  3. 3.Dipartimento di FisicaUniversita’ di MessinaMessina

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