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A reverse micellar cubic phase

Langmuir, ISSN: 0743-7463, Vol: 12, Issue: 6, Page: 1419-1422
1996
  • 59
    Citations
  • 0
    Usage
  • 26
    Captures
  • 1
    Mentions
  • 0
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  • Citations
    59
    • Citation Indexes
      59
  • Captures
    26
  • Mentions
    1
    • References
      1
      • Wikipedia
        1

Article Description

A reverse (water-in-oil) cubic phase was observed in a ternary system consisting of an amphiphilic diblock copolymer (EOBO, where EO represents ethylene oxide and BO represents butylene oxide), water, and p-xylene in the following composition range: 47-62 wt% polymer and 7-12 wt% water. This cubic phase occurs between a reverse hexagonal liquid crystalline (H) and a reverse micellar solution (L) region and can be considered the result of crystallization of the reverse micelles as they swell with increasing water content. Small-angle X-ray spectra from samples of this cubic phase can be indexed to the crystallographic space group Fd3m (Q227). This is one of the first times a cubic structure consisting of distinct reverse micelles has been observed in a ternary amphiphile-water-oil system; bicontinuous reverse cubic structures, such as the Gyroid (Ia3d, Q230), are more common and have been previously identified in such ternary systems between the lamellar (L) and the H phases.

Bibliographic Details

Paschalis Alexandridis; Ulf Olsson; Björn Lindman

American Chemical Society (ACS)

Materials Science; Physics and Astronomy; Chemistry

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