Title

Dynamic Behavior in Isotropic Regions of Tetradecylpyridinium Bromide/pentanol/heptane/water System

Abstract

Self-diffusion coefficients from pulsed-gradient spin-echo NMR are reported for four components of the tetradecylpyridinium bromide-85% heptane 15% pentanol-water pseudoternary system. Measurements were taken throughout the inverted microemulsion region and also in a small isotropic region beyond the domain of lamellar liquid crystals. Boundaries for the smaller isotropic region were also delineated. Observations of the self-diffusion coefficients for water relative to those of the surfactant, oil, and alcohol show several distinct structural transitions within the water-in-oil region of the phase diagram. The smaller isotropic region exhibits a complete inversion of phase relative to the water-in-oil region. Conductivity measurements were used to further clarify the NMR data. © 1990.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1990 Elsevier, All rights reserved.


Share

 
COinS