Optimization of Oil-in-Water Emulsion Stability: Experimental Design, Multiple Light Scattering, and Acoustic Attenuation Spectroscopy

Malek Bendjaballah (1) , Jean-Paul Canselier (2) , Rabah Oumeddour (1)

1 Laboratoire d'Analyses Industrielles et Génie des Matériaux
2 LGC - Laboratoire de Génie Chimique

To find an optimal formulation of oil-in-water (O/W) emulsions (o = 0.05), the effect of emulsifier nature and concentration, agitation speed, emulsifying time, storage temperature and their mutual interactions on the properties and behavior of these dispersions is evaluated by means of an experimental design (Nemrodw software). Long-term emulsion stability is monitored by multiple light scattering (Turbiscan ags) and acoustic attenuation spectroscopy (Ultrasizer). After matching surfactant HLB and oil required HLB, a model giving the Sauter diameter as a function of emulsifier concentration, agitation speed and emulsification time is proposed. The highest stability of C12E4-stabilized O/W emulsions is observed with 1% emulsifier.

Mots clés: Emulsification; Emulsion stability; Experimental design; Mechanical agitation; Nonionic surfactants; Rheology

Domaines: Génie chimique; Milieux fluides et réactifs; Génie des procédés; Mécanique des fluides [physics.class-ph]

Malek Bendjaballah, Jean-Paul Canselier, Rabah Oumeddour. Optimization of Oil-in-Water Emulsion Stability: Experimental Design, Multiple Light Scattering, and Acoustic Attenuation Spectroscopy. Journal of Dispersion Science and Technology, 2010, 31 (9), pp.1260-1272. ⟨10.1080/01932690903224888⟩. ⟨hal-03547608⟩