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Dynamic response studies on aggregation and breakage dynamics of colloidal dispersions in stirred tanks

Soos, M. and Moussa, A. S. and Ehrl, L. and Sefcik, J. and Wu, H. and Morbidelli, M. (2008) Dynamic response studies on aggregation and breakage dynamics of colloidal dispersions in stirred tanks. Journal of Dispersion Science and Technology, 29 (4). pp. 605-610. ISSN 0193-2691

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Abstract

Aggregation and breakage of aggregates of fully destabilized polystyrene latex particles in turbulent flow was studied experimentally in both batch and continuous stirred tanks using small-angle static light scattering. It was found that the steady-state values of the root-mean-square radius of gyration are fully reversible upon changes of stirring speed as well as solid volume fraction. Steady-state values of the root-mean-square radius of gyration were decreasing with decreasing solid volume fraction as well as with increasing stirring speed. Moreover, it was found that the steady-state structure and shape of the aggregates is not influenced by the applied stirring speed.