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Polymer-coated aperture plates for tailored atomization processes.

Moritz Beck-Broichsitter1

  • 1Medical Clinic II, Department of Internal Medicine, Justus-Liebig-Universität, Giessen, Germany.

Materials Science & Engineering. C, Materials for Biological Applications
|March 25, 2020
PubMed
Summary
This summary is machine-generated.

Conformal polymer coatings precisely control droplet size from actuated aperture plates. Smaller droplets enhance spray-drying and improve lung deposition for inhaled therapeutics.

Keywords:
AerosolAperture plateChemical vapor depositionDroplet sizeNebulizationSpray-drying

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Pharmaceutical Sciences

Background:

  • Industrial applications require precise control over droplet size for processes like spray-drying and drug delivery.
  • Existing methods for droplet size manipulation have limitations, particularly for generating sub-10 micrometer droplets.

Purpose of the Study:

  • To investigate the use of conformal polymer coatings to modify aperture plate orifice dimensions.
  • To determine the impact of controlled droplet size on spray-drying outcomes and lung deposition.

Main Methods:

  • Application of conformal polymer coatings to reduce aperture plate orifice dimensions.
  • Characterization of generated droplet sizes, particularly in the sub-10 micrometer range.
  • Evaluation of the effect of droplet size on dried particle characteristics and simulated lung deposition.

Main Results:

  • Conformal polymer coatings enabled precise reduction of orifice dimensions, allowing for tunable droplet generation.
  • A strong correlation was observed between generated droplet size and final dried particle size in spray-drying.
  • Smaller droplet sizes significantly improved predicted lung deposition efficiency for inhaled applications.

Conclusions:

  • Conformal polymer coatings offer a versatile method for manipulating droplet size from actuated aperture plates.
  • Precise droplet size control is crucial for optimizing spray-drying processes and enhancing aerosol drug delivery.
  • This technique provides a pathway to generate sub-10 micrometer droplets for advanced applications.