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Phase Equilibria and Structure of the 1-Dodecylpyridinium Bromide–Dodecane–Water System by Håkan Edlund; Malin Bydén; Birger Lindström; Ali Khan is a Chemistry article available to read on EtoBox.

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The isothermal ternary phase diagram for the 1-dodecylpyridinium bromide/dodecane/water system was determined at 40 degreesC by 2H NMR and polarizing microscopy methods. Two liquid crystalline phases, a large cubic area and a normal hexagonal phase, and one isotropic normal micellar solution phase were characterized, and their ranges of existence were determined. The micelles were found to be probably small and spherical at lower concentrations of surfactant, and were found to grow at higher concentrations and on addition of oil. The two-phase areas, L1 + HI and HI + I, are both very narrow. The comparatively large cubic area, containing 43-63 wt% surfactant and 3-10 wt% dodecane, is probably consistent of more than one structure. SAXS experiments indicate two different structures built of discrete micellar aggregates. Copyright 1998 Academic Press.

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Author

Håkan Edlund; Malin Bydén; Birger Lindström; Ali Khan

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

1998

Language

EN

Field

Chemistry (Physical Sciences)