Effect of the hydrophobicity of fumed silica particles and the nature of oil on the structure and rheological behavior of Pickering emulsions

We studied the efficiency of Aerosil® fumed silica particles to emulsify oils with water. Pickering emulsions were prepared using 1%wt of particles displaying different degrees of hydrophobicity. 0.1 Pa.s polydimethylsiloxane and paraffin oils were used to investigate the effect of the oil polarity and a 0.02 Pa.s polydimethylsiloxane was used to check the effect of the viscosity on the structure and the rheological behavior. Macroscopic...