Premium
Influence of Porosity on the Electrical Sensing Zone and Laser Diffraction Sizing of Silicas. A collaborative study
Author(s) -
Michoel Armand,
De Jaeger Nicolas,
Sneyers Rik,
De Wispelaere Walter,
Geladeé Erik,
Kern Jo,
Gorter Wim,
van Amsterdam Peter,
Tandt Youry Den,
Houtmeyers Eddy,
van Cotthem Luc
Publication year - 1994
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.19940110507
Subject(s) - sizing , porosity , materials science , diffraction , particle size , particle (ecology) , anisotropy , particle size distribution , composite material , mineralogy , optics , chemical engineering , geology , chemistry , organic chemistry , physics , engineering , oceanography
The objective of a continuing study by the Belgian Particle Technology Group involves difficulties in practical size determinations. This part describes the behaviour of silicas with different porosities during sizing by electrical sensing zone and laser diffraction methods. Anisotropy and porosity were identified to be important particle characteristics in understanding the differences between the two methods. Especially large pore diameters and pore volumes were found to be responsible for shifts in size distribution of 50 to 100%. The use of optical values and optical models was shown to influence these shifts considerably. In the case of spherical silica particles with moderate porosity, no significant differences could be found between the two sizing methods.