Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Acoustic Spectroscopy for Characterizing Heptane/H(2)O/AOT Reverse Microemulsions.

Wines1, Dukhin, Somasundaran

  • 1Columbia University, 1140 Amsterdam Avenue, New York, New York, 10027

Journal of Colloid and Interface Science
|July 28, 1999
PubMed
Summary

Acoustic spectroscopy effectively monitored droplet size in heptane-water-Aerosol-OT (AOT) systems. Results matched scattering techniques, revealing a shift to bimodal distribution in turbid regions.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Effect of the Nonstationary Viscous Flow in the Capillary on Oscillating Bubble and Oscillating Drop Measurements.

Journal of colloid and interface science·2000
Same author

Use of Pyrene Spectroscopic Probes in the Study of Colloidal Systems.

Journal of colloid and interface science·2000
Same author

Investigation of Thin Aqueous Films on Silica Using a Modified Interferometric Technique.

Journal of colloid and interface science·2000
Same author

Bubble Oscillations in a Closed Cell.

Journal of colloid and interface science·2000
Same author

Resonance Behavior of Oscillating Bubbles.

Journal of colloid and interface science·2000
Same author

Colloid Vibration Potential in a Concentrated Suspension of Spherical Colloidal Particles.

Journal of colloid and interface science·1999

Area of Science:

  • Colloid and Surface Science
  • Physical Chemistry
  • Materials Science

Background:

  • Reverse microemulsions are thermodynamically stable dispersions of oil and water stabilized by surfactants.
  • Understanding droplet size dynamics is crucial for controlling microemulsion properties and phase behavior.
  • Aerosol-OT (AOT) is a common surfactant used in forming microemulsions.

Purpose of the Study:

  • To employ acoustic spectroscopy for monitoring droplet size distribution in a heptane-water-AOT system.
  • To investigate the effect of varying the water-to-surfactant ratio on droplet size.
  • To compare acoustic results with established scattering techniques and explore phase transitions.

Main Methods:

  • Acoustic spectroscopy was utilized to probe the microemulsion system.

Related Experiment Videos

  • Droplet size distribution was analyzed by varying the molar ratio of water to Aerosol-OT (AOT).
  • Results were validated against data from small angle neutron scattering (SANS) and small angle X-ray scattering (SAXS).

    • Main Results:

    • Acoustic spectroscopy accurately determined droplet size distribution in the transparent microemulsion region.
    • The findings showed excellent agreement with existing literature data from SANS and SAXS.
    • As the system transitioned into the turbid region (microemulsion to macroemulsion), a shift to a bimodal droplet size distribution was observed.

    Conclusions:

    • Acoustic spectroscopy is a viable and accurate technique for characterizing droplet size in microemulsions.
    • The water-to-surfactant ratio is a key parameter controlling droplet size and phase behavior.
    • The transition from microemulsion to macroemulsion is accompanied by a significant change in droplet size distribution.