Electron microscopic and light scattering observation on a system with two iridescent phases
- 56 Downloads
Electron microscopic observations and classical light-scattering measurements have been carried out for dodecyldimethylaminoxide/hexanol/water mixtures in the concentration range where iridescent colors occur. This system has two different iridescent phases. The iridescent phase with more hexanol forms quickly, and the phase with less hexanol forms very slowly. Three different isotropic phases which show strong flow birefringence are found near both iridescent phases. The electron microscopic pictures show clearly that only one of these isotropic phases with strong flow birefringence is a bicontinuous sponge phase (L3h-phase). This is the phase which comes out by adding some alkanol to the upper lamellar phase. The flow birefringent phase below the lower lamellar phase forms unilamellar vesicles. The flow birefringent phase which occurs between both iridescent phases contains multilamellar vesicles and is shown to be a precursor of a lamellar phase.
Key wordsElectron microscopy light scattering dodecyldimethylaminoxide/hexanol/water iridescent phase bicontinuous sponge phase vesicle phase
Unable to display preview. Download preview PDF.
- 1.Platz G, Thunig C, Hoffmann H (1990) Progr Collold Polym Sci 83:167Google Scholar
- 2.Platz G, Thunig C, Hoffmann H (1992) Ber Bunsenges Phys Chem 96(5):667–677.Google Scholar
- 3.Hoffmann H, Thunig C, Munkert U, Meyer HW, Richer W (1992) Langmuir 8:2629–2638Google Scholar
- 4.Suzuki Y, Tsutsumi H (1984) Yukagaku 33:786Google Scholar
- 5.Satoh N, Tsuji K (1987) J Phys Chem 91:6629Google Scholar
- 6.Thunig C, Hoffmann H, Platz G (1989) Progr Colloid Polym Sci 79:297Google Scholar
- 7.Imae T, Trend B (1991) J Colloid Interface Sci 207:145Google Scholar
- 8.Imae T, Iwamoto T (1992) J Colloid Interface Sci 152:289Google Scholar
- 9.Strey R, Schomäker R, Roux D, Nallet F, Olsson U (1990) J Chem Soc Faraday Trans 86:2253Google Scholar
- 10.Gebhardt C, Gruler H, Sackmann E (1977) Z Naturforsch 32c:581–596Google Scholar