Production of pigment nanoparticles using a wet stirred mill with polymeric media--颗粒学报PARTICUOLOGY

Bilgili, E., Hamey, R., & Scarlett, B. (2004). Production of pigment nanoparticles using a wet stirred mill with polymeric media. China Particuology, 2(3), 93-100. https://doi.org/10.1016/S1672-2515(07)60032-3

Production of pigment nanoparticles using a wet stirred mill with polymeric media

Ecevit Bilgili ^a *, Rhye Hamey ^{a b}, Brian Scarlett ^a

a Particle Engineering Research Center, 205 PS&T Building, University of Florida, Gainesville, FL 32611-6135, USA
b Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA

10.1016/S1672-2515(07)60032-3

Volume 2, Issue 3, June 2004, Pages 93-100

Received 20 April 2004, Accepted 10 May 2004, Available online 27 November 2007.

E-mail: ebilgili@erc.ufl.edu

Highlights

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 relatively 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.

Graphical abstract

Keywords

nanoparticles; stirred media mill; pigment; polymeric media; breakage; population balance model

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