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Synthesis of Engineered Synthesis of Engineered Particulates Using Dry Particulates Using Dry
Particle CoatingParticle Coating
By Nick van NispenBy Nick van Nispen
Engineered ParticulatesEngineered Particulates
Powder materials designed to have specific Powder materials designed to have specific properties are called properties are called Engineered Engineered or or Designed Designed ParticulatesParticulates Three TypesThree Types
Coated particles (discrete and film coatingsCoated particles (discrete and film coatings Designer particles having a specific size, shape or Designer particles having a specific size, shape or
morphologymorphology Composite particles (nano-composites, granulated particles)Composite particles (nano-composites, granulated particles)
Our research focuses on the formation/synthesis of Our research focuses on the formation/synthesis of coated particles using new and innovative coated particles using new and innovative techniquestechniques
Engineered ParticulatesEngineered Particulates
The coating of The coating of individual particles individual particles with other, smaller with other, smaller particles is particles is commonly carried commonly carried out to improve the out to improve the characteristics of characteristics of particlesparticles Wet Particle CoatingWet Particle Coating Dry Particle CoatingDry Particle Coating
ApplicationsApplications
Nanoparticulates are widely used in industryNanoparticulates are widely used in industry CosmeticsCosmetics DyestuffDyestuff TonerToner PharmaceuticalsPharmaceuticals FoodFood CeramicsCeramics PowderPowder BiochemicalBiochemical ElectromaterialsElectromaterials Fertilizer Fertilizer
ApplicationsApplications Particle Coating can change the properties of Particle Coating can change the properties of
target particlestarget particles FlowabilityFlowability DispersibilityDispersibility WettabilityWettability ColoringColoring FalvorFalvor Hydrophilic/Hydrophobic PropertiesHydrophilic/Hydrophobic Properties Electristatic/Electric/Magnetic/Optical CharacteristicsElectristatic/Electric/Magnetic/Optical Characteristics Particle Size DistributionParticle Size Distribution Shape/SphericityShape/Sphericity Solid Phase ReactivitySolid Phase Reactivity
Wet Particle CoatingWet Particle Coating
Currently Industrial Standard for Currently Industrial Standard for nanoparticle coatingnanoparticle coating DrawbacksDrawbacks
WPC solution may be volatile and toxicWPC solution may be volatile and toxic Requires post treatment and waste Requires post treatment and waste
processing processing increases cost increases cost
Dry Particle CoatingDry Particle Coating
Advantages to WPCAdvantages to WPC new particles may have completely new particles may have completely
different functionality or much improved different functionality or much improved properties properties
much reduced use of high-priced or rare much reduced use of high-priced or rare materials materials
Process is environmentally cleanProcess is environmentally clean Water soluble powders can now be coated Water soluble powders can now be coated
without compromising the samplewithout compromising the sample
Dry Particle CoatingDry Particle Coating
Dry Particle Coating EquipmentDry Particle Coating Equipment MechanofusionMechanofusion HybridizerHybridizer Magnetic Assisted Impactation CoatingMagnetic Assisted Impactation Coating
ExamplesExamples
Processing Time – 5 Mins Processing Time – 10 Mins
Surface Morphology of Cellulose/TiO2 at different processing times
Current Research at NJITCurrent Research at NJIT
Coating Particles using various coating Coating Particles using various coating techniques to create host/guest blendstechniques to create host/guest blends Cornstarch/TiOCornstarch/TiO22
Pure Al/R972Pure Al/R972 After Processing, nanoparticulates are After Processing, nanoparticulates are
processed again together to discover if processed again together to discover if guest particle exchange still occurs after guest particle exchange still occurs after coatingcoating To be analzyed using EDX and SEM imagingTo be analzyed using EDX and SEM imaging