PRODUCTION OF PIGMENT NANOPARTICLES USING A WET STIRRED MILL WITH POLYMERIC MEDIA

作     者：Ecevit Bilgili Rhye Hamey Brian Scarlett 

作者机构：Particle Engineering Research Center 205 PS&T Building University of Florida Gainesville FL 32611-6135 USAParticle Engineering Research Center 205 PS&T Building University of Florida Gainesville FL 32611-6135 USADepartment of Materials Science and Engineering University of Florida Gainesville FL 32611 USAParticle Engineering Research Center 205 PS&T Building University of Florida Gainesville FL 32611-6135 USA 

出 版 物：《China Particuology》 (CHINA PARTICUOLOGY)

年 卷 期：2004年第2卷第3期

页      面：93-100页

核心收录：

学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：Foundation of Particle Engineering Research Center (PERC) at the University of Florida 国家自然科学基金(EEC-94-0289) Foudation of Industrial Partners of the PERC 

主　　题：nanoparticles stirred media mill pigment polymeric media breakage population balance model 

摘      要：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.