The determination of size distribution of carbon blacks in aqueous dispersion by turbidity measurements

  • Tet Soei Ng
Neue Meßmethoden
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 65)


From the spectral transmission measurements of some carbon black types the size distribution was estimated. For a logarithmic normal distribution a programme was written in the Fortran IV language to compute the theoretical turbidity spectra. As far as known, such computations have only been carried out for non-absorbing particles.

By superimposing the measured turbidity curves upon the computed set of curves the parameter σ g and a g of the logarithmic normal size distribution could be determined. It shows that the colour black HCCI has a narrow, SAF-, ISAF- and HAF-blacks medium, whereas FEF- and SRF-blacks have broad size distribution. The aggregate radii increase from 26 to 96 nm in the order HCCI-, SAF-, ISAF-, HAF-, FEF- and SRF-black.

As the turbidity spectra are characteristic for a black type, this method can be used for the identification of carbon blacks.


Carbon Black Aqueous Dispersion Broad Size Distribution Tyre Scrap Logarithmic Normal Distribution 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1978

Authors and Affiliations

  • Tet Soei Ng
    • 1

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