Dynamic Response Studies on Aggregation and Breakage Dynamics of Colloidal Dispersions in Stirred Tanks

Part of the 1st International Conference on Industrial Processes for Nano and Micro Products, London, 2007.

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.

Keywords:

• Root‐mean‐square radius of gyration
• aggregation
• breakage
• steady-state reversibility
• aggregate structure

Notes

Part of the 1st International Conference on Industrial Processes for Nano and Micro Products, London, 2007.