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Double-chain cationic surfactant and n-pentanol: an L3 phase in the rich-water domain?

The journal of physical chemistry. B (2007-10-12)
Claudia C Medugno, Marina de M Lessa, Tiago R Oliveira, M Teresa Lamy
ABSTRACT

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.

MATERIALS
Product Number
Brand
Product Description

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1-Pentanol, ReagentPlus®, ≥99%
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1-Pentanol, ACS reagent, ≥99%
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1-Pentanol, puriss. p.a., ACS reagent, ≥99.0% (GC)
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Amyl alcohol, ≥99%, FG
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1-Pentanol, Pharmaceutical Secondary Standard; Certified Reference Material
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1-Pentanol-1-13C, 99 atom % 13C, 99% (CP)