Micelle-vesicle transition of oleyldimethylamine oxide in water

Masahiko Miyahara, Hideya Kawasaki, Vasil M. Garamus, Norio Nemoto, Rie Kakehashi, Shimon Tanaka, Annaka Masahiko, Hiroshi Maeda

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We studied the effects of the degree of ionization(α) and the surfactant concentration (C d) on the micelle-vesicle transition in salt-free oleyldimethylamine oxide (OlDMAO) aqueous solutions by the dynamic light scattering (DLS), the hydrogen ion titration, the small angle neutron scattering (SANS), the electrophoretic light scattering (ELS) and viscoelastic measurements. From the study of ionization effects, the micelle-vesicle transition was recognized as a change of aggregate size by the DLS measurement; however, the micelle-vesicle transition was not detected both in the ELS measurement and the hydrogen ion titration, suggesting that the electric properties of the worm-like micelles and the vesicles are very similar despite a large difference of shapes between them. From the results of the SANS, the DLS and the viscosity measurements, it was suggested that a concentration-dependent micelle-vesicle transition took place around C p = 10 mmol kg -1 for the solutions at α = 0.5. In the concentration-range 10 mmol kg -1 < C d < 150 mmol kg -1, the micelles and the vesicles coexisted. In the concentration region (C d = 10-50 mmol kg -1), the vesicle size increased with the surfactant concentration.

Original languageEnglish
Pages (from-to)131-138
Number of pages8
JournalColloids and Surfaces B: Biointerfaces
Volume38
Issue number3-4 SPEC. ISS.
DOIs
Publication statusPublished - Nov 15 2004

Fingerprint

Micelles
Oxides
micelles
light scattering
oxides
Water
Dynamic light scattering
Small Angle Scattering
water
Neutrons
hydrogen ions
Neutron scattering
Titration
Surface-Active Agents
titration
Light scattering
Ionization
Protons
neutron scattering
Surface active agents

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry
  • Colloid and Surface Chemistry

Cite this

Miyahara, M., Kawasaki, H., Garamus, V. M., Nemoto, N., Kakehashi, R., Tanaka, S., ... Maeda, H. (2004). Micelle-vesicle transition of oleyldimethylamine oxide in water. Colloids and Surfaces B: Biointerfaces, 38(3-4 SPEC. ISS.), 131-138. https://doi.org/10.1016/j.colsurfb.2004.04.011

Micelle-vesicle transition of oleyldimethylamine oxide in water. / Miyahara, Masahiko; Kawasaki, Hideya; Garamus, Vasil M.; Nemoto, Norio; Kakehashi, Rie; Tanaka, Shimon; Masahiko, Annaka; Maeda, Hiroshi.

In: Colloids and Surfaces B: Biointerfaces, Vol. 38, No. 3-4 SPEC. ISS., 15.11.2004, p. 131-138.

Research output: Contribution to journalArticle

Miyahara, M, Kawasaki, H, Garamus, VM, Nemoto, N, Kakehashi, R, Tanaka, S, Masahiko, A & Maeda, H 2004, 'Micelle-vesicle transition of oleyldimethylamine oxide in water', Colloids and Surfaces B: Biointerfaces, vol. 38, no. 3-4 SPEC. ISS., pp. 131-138. https://doi.org/10.1016/j.colsurfb.2004.04.011
Miyahara M, Kawasaki H, Garamus VM, Nemoto N, Kakehashi R, Tanaka S et al. Micelle-vesicle transition of oleyldimethylamine oxide in water. Colloids and Surfaces B: Biointerfaces. 2004 Nov 15;38(3-4 SPEC. ISS.):131-138. https://doi.org/10.1016/j.colsurfb.2004.04.011
Miyahara, Masahiko ; Kawasaki, Hideya ; Garamus, Vasil M. ; Nemoto, Norio ; Kakehashi, Rie ; Tanaka, Shimon ; Masahiko, Annaka ; Maeda, Hiroshi. / Micelle-vesicle transition of oleyldimethylamine oxide in water. In: Colloids and Surfaces B: Biointerfaces. 2004 ; Vol. 38, No. 3-4 SPEC. ISS. pp. 131-138.
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