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

Surface Rheological Data for a Polymeric Surfactant Using a Pulsed Drop Rheometer.

Kitching1, Johnson, Midmore

  • 1Chemistry Department, Reading University, Reading, RG6 2AD, United Kingdom

Journal of Colloid and Interface Science
|January 15, 1996
PubMed
Summary

This study used a pulsed drop rheometer to measure dynamic interfacial tension of polymeric surfactant E5. Above the critical micelle concentration (CMC), micelle diffusion governed relaxation; below the CMC, diffusion and reorientation effects were intertwined.

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

Probing the mechanisms of enantioselective hydrogenation of simple olefins with chiral rhodium catalysts in the presence of anions

Chemistry (Weinheim an der Bergstrasse, Germany)·2000
Same author

Chemical mediation of egg dumping in the lace bug Gargaphia solani Heidemann (Heteroptera: Tingidae).

Animal behaviour·1999
Same author

A Comparison of Streaming and Microelectrophoresis Methods for Obtaining the zeta Potential of Granular Porous Media Surfaces.

Journal of colloid and interface science·1999
Same author

Pleistocene extinction of genyornis newtoni: human impact on australian megafauna

Science (New York, N.Y.)·1999
Same author

Conditions for vigorous growth on sulfide and reactor-scale cultivation protocols for the thermophilic green sulfur bacterium chlorobium tepidum

Applied and environmental microbiology·1999
Same author

The Influence of Temperature on the Adsorption of Cadmium(II) and Cobalt(II) on Kaolinite.

Journal of colloid and interface science·1998

Area of Science:

  • Colloid and Surface Science
  • Polymer Science
  • Physical Chemistry

Background:

  • Understanding interfacial behavior of surfactants is crucial for various industrial applications.
  • Polymeric surfactants exhibit complex adsorption dynamics at interfaces.
  • Dynamic interfacial tension measurements provide insights into relaxation mechanisms.

Purpose of the Study:

  • To investigate the dynamic interfacial tension of oil-soluble polymeric surfactant E5 at different concentrations.
  • To elucidate the relaxation mechanisms of adsorbed E5 layers at n-decane/water and Isopar M/water interfaces.
  • To determine parameters like diffusion coefficients and micellar aggregation numbers.

Main Methods:

  • Utilized a pulsed drop rheometer to induce and monitor interfacial relaxation.

Related Experiment Videos

  • Measured dynamic interfacial tension by analyzing droplet profile changes after expansion.
  • Employed Fourier transforms to calculate dilational elasticity and viscosity from frequency spectra.

    • Main Results:

    • Above the critical micelle concentration (CMC), interfacial relaxation was attributed to micelle diffusion to the interface.
    • Below the CMC, interfacial relaxation involved contributions from both diffusion and reorientation processes.
    • Calculated diffusion coefficients and micelle sizes allowed for determination of micellar aggregation numbers.

    Conclusions:

    • The study successfully characterized the dynamic interfacial tension of E5 surfactant.
    • Micelle diffusion is the primary relaxation mechanism above the CMC.
    • Below the CMC, distinguishing between diffusion and reorientation proved challenging due to similar characteristic frequencies.