Monodisperse micron-size polymer core/nanoparticle pigment shell composite particles via heteroaggregation
| Autor: | Mohamed S. El-Aasser, Victoria L. Dimonie, Manoli M. Zubitur, E. David Sudol |
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| Rok vydání: | 2009 |
| Předmět: |
chemistry.chemical_classification
Dispersion polymerization Materials science Polymers and Plastics Dispersity Nanoparticle General Chemistry Polymer Surfaces Coatings and Films chemistry.chemical_compound chemistry Polymerization Chemical engineering Polymer chemistry Materials Chemistry Copolymer Particle size Polystyrene |
| Zdroj: | Journal of Applied Polymer Science. 114:264-274 |
| ISSN: | 1097-4628 0021-8995 |
| Popis: | A process for preparing monodisperse, micron-size composite particles consisting of a polymer core and a nanoparticle pigment shell is described. A heteroaggregation process employing uniform, stable micron-size polymer particles prepared by dispersion polymerization and unstable carbon black pigment particles proved successful for a variety of polymers including poly(methyl methacrylate) (PMMA), polystyrene (PS), poly(n-butyl acrylate) (PBuA), and several functional copolymers. Sonication is applied to the mixture enabling the pigment to be broken into its primary particle size, allowing it to form a relatively uniform layer on the surface of the polymer particles by heteroaggregation when the sonication is removed. Attempts to encapsulate these pigment-coated particles by seeded polymerization resulted in only partial engulfment of the pigment particles in the surface. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 |
| Databáze: | OpenAIRE |
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