Double-chain cationic surfactant and n-pentanol: an L3 phase in the rich-water domain?
A ternary system containing water, pentanol and a quaternary cationic surfactant, dioctadecyldimethylammonium bromide (DODAB) was investigated. We present the phase diagram and ESR studies that demonstrate the existence of the well-known L3 or sponge phase in the water-rich domain of the diagram. The remarkable fact is the existence of some kind of order in such diluted conditions.
Medugno
Claudia C
CC
Embrapa Meio Ambiente, Rodovia Campinas Mogi Mirim, Tanquinho Velho, CP 69, BR-13820000, Jaguariúna, SP, Brazil.
de M Lessa
Marina
M
Oliveira
Tiago R
TR
Lamy
M Teresa
MT
D002412:Cations / Q000737:chemistry; D004578:Electron Spin Resonance Spectroscopy; D015394:Molecular Structure; D000439:Pentanols / Q000737:chemistry*; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
D002412:Cations; D000439:Pentanols; D013501:Surface-Active Agents; D014867:Water; C024999:n-pentanol