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Encapsulation and Permeability Characteristics of Plasma Polymerized Hollow Particles
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Chapters
- 00:05Title
- 01:37Preparation of Silica Nanoparticles for Deposition
- 02:23Preparation of the Vacuum System
- 02:47Plasma Deposition Process
- 04:27Preparation of Hollow Particles by Dissolution of Core Material
- 05:36Characterization of Permeability (Rate of Core Release)
- 06:56Results: Plasma Polymerized Hollow Particles
- 08:40Conclusion
We have used plasma enhanced chemical vapor deposition to deposit thin films ranging from a few nm to several 100 nm on nano-sized particles of various materials. We subsequently etch the core material to produce hollow nanoshells whose permeability is controlled by the thickness of the shell. We characterize the permeability of these coatings to small solutes and demonstrate that these barriers can provide sustained release of the core material over several days.
Tags
EncapsulationPermeability CharacteristicsPlasma Polymerized Hollow ParticlesCore-shell NanostructuresPlasma Enhanced Chemical Vapor DepositionAmorphous BarrierPlasma PolymerizationIsopropanolSolid SubstratesSilicaPotassium ChlorideNanoparticlesNanopowdersFilms ThicknessDissolution Of The CoreDiffusion CoefficientKCl NanocrystalsIonic ConductivityEncapsulation And Delayed Release Of SolutesShell ThicknessRate Of Release
