Abstract
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.
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© 1978 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Ng, T.S. (1978). The determination of size distribution of carbon blacks in aqueous dispersion by turbidity measurements. In: Lagaly, G., Müller, F.H., Weiss, A. (eds) Progress in Colloid & Polymer Science. Progress in Colloid & Polymer Science, vol 65. Steinkopff. https://doi.org/10.1007/BFb0117228
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DOI: https://doi.org/10.1007/BFb0117228
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