Preliminary Program subject to change
TWA17 Particle Size Measurement - I
OverviewMeasurement of particle size distributions (PSDs) is the cornerstone of powder technology. Accurate and representative PSD measurements are important for both applications and the quantitative modelling of properties. This is a generally well accepted philosophy but the limitations of time for data collection and the physical models used to transform the measured quantity into a reliable PSD is not always easy. In particular the assumption of spherical shape is often problematic. Papers on all types of methods are welcome, particularly studies on well characterised systems that allow us to evaluate the robustness of the measurement method for particular applications. Also size ranges can induce limitations for different method. Studies on size ranges from nanometres to millimetres are all welcome. Another interesting aspect to PSD measurement is the breadth of materials (polymer, pharmaceutical, ceramic, metallic, food, etc.) where their granular characteristics are often of great practical importance. Papers from all disciplines are equally encouraged to help cross-fertilise ideas from different fields of application.
Primary SponsorParticle and Bulk Powder Characterization (TWa)

Chair

Paul Bowen
Research Scientist
Powder Technology Laboratory / Materials Science and Engineering
Swiss Federal Institute of Technology
CH-1015 Lausanne
Lausanne,
Switzerland
Phone Number: +41 21 693 49 07
Fax Number: +41 21 693 30 89
Email: paul.bowen@epfl.ch

CoChair

Yasushige Mori
Professor
Department of Chemical Engineering and Material Science
Doshisha University
1-3 Tatara Miyakodani, Kyotanabe,
Koyoto,
Japan
Phone Number: 0 -774-65-6626
Fax Number: 0 -774-65-6847
Email: ymori@mail.doshisha.ac.jp
Psd by Laser Diffraction Spectrometry: Application to Cementitious Powders
Chiara F. Ferraris1, Jeffrey W. Bullard1 and Vincent A. Hackley2, (1)NIST, 100 Bureau Dr. MS 8615, Gaithersburg, MD 20899, (2)NIST, 100 Bureau dr. MS 8520, Gaithersbrug, MD 20899
Graphical Comparison of Image Analysis and Laser Diffraction Particle Size Analysis Data: a Demonstration of the Incorrect Assumptions of Random Particle Orientation and Equivalent Spherical Volume for Acicular Particulates
Richard N. Kelly, Pharmaceutical Sciences, Johnson & Johnson Pharmaceutical Research & Development, L.L.C., Room P-1029 McKean & Welsh Roads, Spring House, PA 19477-0776, Kimberly J. DiSante, University of Pittsburgh, Pittsburgh, PA 15260, Elliot L. Stranzl, Internal Standards Group, Johnson Matthey, 435 Devon Park Drive, Wayne, PA 19087, Jacqueline A. Kazanjian, Yves Rocher North America Inc., 102 Pickering Way, Suite 300, Exton, PA 19341, Paul Bowen, Powder Technology Laboratory / Materials Science and Engineering, Swiss Federal Institute of Technology, CH-1015 Lausanne, Lausanne, Switzerland, Tatsushi Matsuyama, Department of Environmental Engineering for Symbiosis, Soka University, 1-236 Tangi-cho, Hachioji, Tokyo, Japan and Nadine Gabas, Laboratoire de Genie Chemique, 5 rue Paulin Talabot, 31106 Toulouse cedex 01, France
Influence of detector geometries of common laser diffractometers on the particle size distribution of elongated particles
Christoph Berthold1, Willi Pabst2 and Klaus G. Nickel1, (1)AB Mineralogy & Geodynamics, Applied Mineralogy, Eberhard Karls University Tuebingen, Institute of Geoscience, Wilhelmstr. 56, 72070 Tuebingen, Germany, (2)Department of Glass and Ceramics, ICT Prague, Technika 5, 166 28 Prague 6, Czech Republic
Determination of the Optical Constants of Polydisperse Particulate Systems in the Uv-Vis Nir Region
Maria A. Velazco-Roa and Suresh N. Thennadil, School of Chemical Engineering and Advanced Materials, University of Newcastle Upon Tyne, Claremont Road Merz Court 3rd Floor, Newcastle Upon Tyne, NE2 4BQ, United Kingdom
Refractive index verification via comparative wet and dry laser diffraction measurements
Alan F. Rawle, Malvern Instruments Inc., 10 Southville Road, Southborough, MA 01772

Topical W: Fifth World Congress on Particle Technology