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Interfacial polymerization within a simplified microfluidic device: capturing capsules.

Elizabeth Quevedo1, Jeremy Steinbacher, D Tyler McQuade

  • 1Cornell University, Department of Chemistry and Chemical Biology, Baker Laboratory, Ithaca, New York 14853-1301, USA.

Journal of the American Chemical Society
|July 28, 2005
PubMed
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This study introduces a simple microfluidic device using tubing and a needle for creating stable oil-water interfaces. The device enables the formation of monodisperse emulsions and interfacial polymerization for low-variation capsules.

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Fluid Dynamics

Background:

  • Microfluidic devices are crucial for precise fluid control.
  • Creating stable oil-water interfaces is essential for emulsion formation.
  • Interfacial polymerization is a key technique for capsule synthesis.

Purpose of the Study:

  • To present a simple, cost-effective microfluidic device design.
  • To demonstrate the device's capability in generating laminar flows and monodisperse emulsions.
  • To utilize the device for interfacial polymerization to produce capsules with low variation.

Main Methods:

  • Fabrication of a microfluidic device using flexible tubing and an orthogonal needle.
  • Characterization of phase behavior based on organic phase flow rate and Reynolds number.

Related Experiment Videos

  • Application of interfacial polymerization for capsule formation and scanning electron microscopy for structural analysis.

    • Main Results:

    • The microfluidic device successfully creates stable oil-water interfaces.
    • Monodisperse emulsions were formed, with phase mapping correlating flow parameters.
    • Capsules with a low coefficient of variation were synthesized via interfacial polymerization.

    Conclusions:

    • The described microfluidic device offers a straightforward method for generating controlled oil-water interfaces.
    • The system is effective for producing monodisperse emulsions and high-quality capsules.
    • This approach facilitates advancements in microfluidic applications for materials synthesis.