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Related Experiment Videos

Study on polyamide microcapsules containing oily liquids

N Yan1, M Zhang, P Ni

  • 1Department of Chemical Engineering, Suzhou University, PR China.

Journal of Microencapsulation
|July 1, 1994
PubMed
Summary
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Microencapsulation of oily liquids in polyphthalamide membranes was optimized. Increased stirring speed and emulsifier concentration reduced microcapsule size, while dodecyl sulphonate sodium (DSS) lowered zeta-potential.

Area of Science:

  • Materials Science
  • Chemical Engineering
  • Colloid Science

Background:

  • Microencapsulation is crucial for protecting and delivering active ingredients.
  • Polyphthalamide membranes offer unique properties for encapsulation.
  • Emulsifiers play a key role in controlling microcapsule characteristics.

Purpose of the Study:

  • To investigate the microencapsulation of oily liquids using polyphthalamide membranes.
  • To analyze the impact of process parameters on microcapsule properties.
  • To evaluate the role of dodecyl sulphonate sodium (DSS) as an emulsifier.

Main Methods:

  • Microencapsulation of oily liquids within polyphthalamide membranes.
  • Utilizing dodecyl sulphonate sodium (DSS) as an emulsifier.

Related Experiment Videos

  • Analysis of mean diameter, distribution, and zeta-potential of microcapsules.

    • Main Results:

    • Mean microcapsule diameter decreased with increased stirring speed.
    • Mean microcapsule diameter decreased with increased emulsifier concentration.
    • Addition of DSS resulted in a decrease in microcapsule zeta-potential.

    Conclusions:

    • Stirring speed and emulsifier concentration are critical for controlling microcapsule size.
    • DSS effectively modifies the surface charge (zeta-potential) of microcapsules.
    • Optimized microencapsulation parameters can yield desired polyphthalamide-based microcapsules.