Abstract
The aggregation of colloidal polystyrene latex particles has been investigated using small-angle static light scattering. Aggregate structures were found to be mass fractal in nature for both the salt-aggregated and depletion-flocculated systems. The measured fractal dimensions were found to be highly dependent on the salt concentration, the concentration of non-adsorbing polymer and the initial particle concentration in solution. The fractal dimensions observed for the depletion-flocculated aggregates, particularly at low polymer concentrations, were significantly larger than those observed for the salt-induced aggregates. Interestingly, for both aggregation systems, an increase in the initial particle concentration resulted in lower fractal dimensions.
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© 1998 Dr. Dietrich Steinkopff Verlag GmbH & Co. KG
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Burns, J.L., Biggs, S., Yan, Y.D., Jameson, G.J. (1998). A comparison of the fractal properties of salt-aggregated and polymer-flocculated colloidal particles. In: Koper, G.J.M., Bedeaux, D., Cavaco, C., Sager, W.F.C. (eds) Trends in Colloid and Interface Science XII. Progress in Colloid & Polymer Science, vol 110. Steinkopff. https://doi.org/10.1007/BFb0118052
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DOI: https://doi.org/10.1007/BFb0118052
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