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Synthesis of Engineered Particulates Using Dry Particle Coating PowerPoint Presentation
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Synthesis of Engineered Particulates Using Dry Particle Coating

Synthesis of Engineered Particulates Using Dry Particle Coating

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Synthesis of Engineered Particulates Using Dry Particle Coating

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  1. Synthesis of Engineered Particulates Using Dry Particle Coating By Nick van Nispen

  2. Engineered Particulates • Powder materials designed to have specific properties are called Engineered or Designed Particulates • Three Types • Coated particles (discrete and film coatings • Designer particles having a specific size, shape or morphology • Composite particles (nano-composites, granulated particles) • Our research focuses on the formation/synthesis of coated particles using new and innovative techniques

  3. Engineered Particulates • The coating of individual particles with other, smaller particles is commonly carried out to improve the characteristics of particles • Wet Particle Coating • Dry Particle Coating

  4. Applications • Nanoparticulates are widely used in industry • Cosmetics • Dyestuff • Toner • Pharmaceuticals • Food • Ceramics • Powder • Biochemical • Electromaterials • Fertilizer

  5. Applications • Particle Coating can change the properties of target particles • Flowability • Dispersibility • Wettability • Coloring • Falvor • Hydrophilic/Hydrophobic Properties • Electristatic/Electric/Magnetic/Optical Characteristics • Particle Size Distribution • Shape/Sphericity • Solid Phase Reactivity

  6. Wet Particle Coating • Currently Industrial Standard for nanoparticle coating • Drawbacks • WPC solution may be volatile and toxic • Requires post treatment and waste processing  increases cost

  7. Dry Particle Coating • Advantages to WPC • new particles may have completely different functionality or much improved properties • much reduced use of high-priced or rare materials • Process is environmentally clean • Water soluble powders can now be coated without compromising the sample

  8. Dry Particle Coating

  9. Dry Particle Coating • Dry Particle Coating Equipment • Mechanofusion • Hybridizer • Magnetic Assisted Impactation Coating

  10. Mechanofusion

  11. Hybridizer

  12. MAIC

  13. Examples Cornstarch CS coated with TiO2

  14. Examples Surface Morphology of Cellulose/TiO2 at different processing times Processing Time – 5 Mins Processing Time – 10 Mins

  15. Examples

  16. Current Research at NJIT • Coating Particles using various coating techniques to create host/guest blends • Cornstarch/TiO2 • Pure Al/R972 • After Processing, nanoparticulates are processed again together to discover if guest particle exchange still occurs after coating • To be analzyed using EDX and SEM imaging