Influence of TiO2 Nanoparticles on the Preparation of Monodisperse Emulsion Using Multi-scale Contactor

Abstract

Monodisperse emulsion with heterogeneity of the droplets size distribution can be used as micro-explosion of fuels. This paper aims to investigate the monodisperse emulsion preparation using an optimized parallel micro-channel contactor at different temperatures. Oil with TiO2 nanoparticles and water are chosen as continuous phase and dispersed phase. The contactor investigated with two distributors and one collector (sixteen parallel Y-type channels) which offers a uniform distribution of flow rate with a minimal pressure drop is appropriate for monodisperse emulsion preparation. Present results demonstrate for water- pure oil emulsion, the emulsion polydispersity and concentration are stable at low temperature. Once the temperature is more than 40°C, the emulsion polydispersity has a sharp rise with the increase of the temperature, while the droplet concentration decreases slowly. It is further found the concentration of emulsion droplet with pure oil is smaller in comparison with TiO2 of 10 nm.