| PRODUCTION OF PIGMENT NANOPARTICLES USING A WET STIRRED MILL WITH POLYMERIC MEDIA |
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| 作者姓名： | EcevitBilgili RhyeHamey BrianScarlett |
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| 作者单位： | [1]ParticleEngineeringResearchCenter,205PS＆TBuilding,UniversityofFlorida,Gainesville,FL32611-6135,USA [2]DepartmentofMaterialsScienceandEngineering,UniversityofFlorida,Gainesville,FL32611,USA |
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| 摘 要： | Pigment nanoparticles with a size range of 10-100 nm were produced from large agglonmerates via a stirred media mill operating in the wet-batch mode and using polymeric media,The effects of several operating variables such as the surfactant concentration,polystyrene media loading.and media size on the pigment size distribution of the product were studied.The process dynamics was also investigated.Dynamic light scattering and electron microscopy were used as the characerization techniques.The polymeric grinding media are found to be effective for the production of pigment nanoparticles.The experimental results suggest the existence of an optimum media size and surfactant concentration,A population balance model of the process reveals a transition from first-order breakage kinetice for rela-large agglomerates split in a first-order kinetics,with a delay period,for the smaller particles.The model implies that large agglomerates split in a first-order fashion whereas the breakage of individual naoparticles may depend on induced fatigue of the particles.
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| 关 键 词： | 纳米颗粒 搅动介质碾磨 颜料 聚合介质 破裂机理 |
PRODUCTION OF PIGMENT NANOPARTICLES USING A WET STIRRED MILL WITH POLYMERIC MEDIA |
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| EcevitBilgili RhyeHamey BrianScarlett.PRODUCTION OF PIGMENT NANOPARTICLES USING A WET STIRRED MILL WITH POLYMERIC MEDIA[J].China Particuology,2004,2(3):93-100. |
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| Authors: | Ecevit Bilgili Rhye Hamey and Brian Scarlett Particle Engineering Research Center PS&T Building University of Florida Gainesville FL - USA |
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| Institution: | Ecevit Bilgili1,*,Rhye Hamey1,2 and Brian Scarlett1 1Particle Engineering Research Center,205 PS&T Building,University of Florida,Gainesville,FL 32611-6135,USA 2Department of Materials Science and Engineering,University of Florida,Gainesville,FL 32611,USA |
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| Abstract: | Pigment nanoparticles with a size range of 10~100 nm were produced from large agglomerates via a stirred media mill operating in the wet-batch mode and using polymeric media. The effects of several operating variables such as the surfactant concentration, polystyrene media loading, and media size on the pigment size distribution of the product were studied. The process dynamics was also investigated. Dynamic light scattering and electron microscopy were used as the characterization techniques. The polymeric grinding media are found to be effective for the production of pigment nanoparticles. The experimental results suggest the existence of an optimum media size and surfactant concentration. A population balance model of the process reveals a transition from first-order breakage kinetics for rela-tively coarse particles to non-first-order kinetics, with a delay period, for the smaller particles. The model implies that large agglomerates split in a first-order fashion whereas the breakage of individual nanoparticles may depend on induced fatigue of the particles. |
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| Keywords: | nanoparticles stirred media mill pigment polymeric media breakage population balance model |
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