Static and dynamic structures of spherical nonionic surfactant micelles during the disorder-order transition

M. Imai, I. Yoshida, T. Iwaki, K. Nakaya

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

We have investigated the static and dynamic structures of nonionic surfactant micelles, a C 12E 8/water binary system, during the disorder-order transition using small angle x-ray scattering, static light scattering, and dynamic light scattering techniques. In the disordered phase, the micelles have spherical shape and intermicellar interactions are governed by the hard core and weak long ranged attractive potentials. With increase of the micellar concentration, the disordered micelles transform to the three characteristic ordered micellar phases, a hexagonally close packed lattice, a body centered cubic lattice, and an A15 lattice having area-minimizing structure. The stability of these phases is well explained by balance of a close packing rule and a minimal-area rule proposed by Ziherl and Kamien [Phys. Rev. Lett. 85, 3528 (2000)]. The role of hydrodynamic interactions in surfactant micellar solutions was compared with that in hard sphere colloidal particle suspensions.

Original languageEnglish
Article number044906
JournalJournal of Chemical Physics
Volume122
Issue number4
DOIs
Publication statusPublished - 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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