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

摘要

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