Particle Sizing By Photon-correlation Spectroscopy .4. Resolution of Bimodals and Comparison With Other Particle Sizing Methods

Finsy, R.;Deriemaeker, L.;Dejaeger, N.;Sneyers, R.;Gelade, E.;et.al.
(1993) Particle & Particle Systems Characterization : an international journal devoted to the measure and description of particle and bulk properties in dispersed systems — Vol. 10, n° 3, p. 118-128 (1993)

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  • Finsy, R.
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  • Deriemaeker, L.
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  • Dejaeger, N.
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  • Sneyers, R.
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  • Gelade, E.
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Abstract
The practical performances of single and multi-angle photon correlation spectroscopy (PCS) for resolving bimodal distributions of industrial poly (methyl methacrylate) samples was investigated in a comparative study by several users affiliated to academic and industrial groups and by two suppliers of commercial equipment. The results for the harmonic intensity averaged diameters obtained by cumulants analysis reported by the different laboratories are in agreement, in addition to the results for the normalized second cumulants. The uncertainty on the latter quantities is large, however. For the bimodal samples with two populations with average diameters in a ratio of about 2.5: 1, not all users were able to resolve the distribution in its components by single-angle PCS. Some slight improvement was obtained by multi-angle PCS. Other indirect techniques (polarization intensity differential scattering, static light scattering data and disc photosedimentometer) appeared to be superior for resolving the bimodal distributions.
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Finsy, R., Deriemaeker, L., Dejaeger, N., Sneyers, R., Vanderdeelen, J., Vandermeeren, P., Demeyere, H., Stonemasui, J., Haestier, A., Clauwaert, J., Dewispelaere, W., Gillioen, P., Steyfkens, S., & Gelade, E. (1993). Particle Sizing By Photon-correlation Spectroscopy .4. Resolution of Bimodals and Comparison With Other Particle Sizing Methods. Particle & Particle Systems Characterization : an international journal devoted to the measure and description of particle and bulk properties in dispersed systems, 10(3), 118-128. https://hdl.handle.net/2078.5/89627 (Original work published 1993)