| 초록 |
When colloidal particles are used to stabilize the emulsion system, it is called ‘Pickering emulsion’. The rheological properties of Pickering emulsion system can vary depend on the ratio of internal phase and the concentration of particles. Many studies have been conducted about the rheological properties of the fluid system that colloidal particles are dispersed. However, there is no clear explanation of the relationship between rheological properties of Pickering emulsions and colloidal particles adsorbed on their interfaces. In this study, elastic behavior of Pickering emulsions stabilized with TiO2 colloidal particles were measured and compared with TiO2 concentration. Experiments were conducted with highly concentrated oil-in-water emulsion system of oil volume fraction ∅=0.85 to minimize energy dissipation by flow. From this study, the model that relates the rheological behavior with particle concentration has been built. |
