The mean droplet sizes of the emulsions decreased by increasing the H-ESO-HEC concentration and extending the ultrasonic time. When the H-ESO-HEC concentration was 0.4 wt %, the emulsion remained stable for >80 days. The H-ESO-HEC concentrations in the aqueous phase varied from 0.02 to 0.40 wt %. The influence of H-ESO-HEC concentrations on the properties of oil-in-water emulsions was examined. By using an ultrasonic method, oil-in-water emulsions were prepared by blending 50 wt % soybean oil and 50 wt % H-ESO-HEC aqueous suspensions. Huang, Xujuan Li, Qiaoguang Liu, He Shang, Shibin Shen, Minggui Song, JieĪn oil-in-water emulsion stabilized by saponified epoxidized soybean oil-grafted hydroxyethyl cellulose (H-ESO-HEC) was investigated. Oil-in-Water Emulsions Stabilized by Saponified Epoxidized Soybean Oil-Grafted Hydroxyethyl Cellulose. Using experiments and ray-tracing simulations we evaluate system optimization. Single-wavelength optical transmission measurements are found to be well suited for the in-line monitoring of oil-water emulsions of fat contents below 20%, e.g., for the in-line fat content monitoring of milk. We demonstrate that for increasing oil content in oil-water emulsions the attenuation first increases, then levels out, and finally even decreases for a fat content of 60%. milk, cream, etc.), these exhibit a nonlinear relationship between the attenuation and the oil concentration. Due to multiple scattering events in oil-water emulsions (e.g. Metz, Philipp Dopf, Katja Aichholz, Markus Riedel, Boris Lemmer, Uli Freudig, Barbara Zimmermann, Clifton Gerken, Martinaįor absorbing media the concentration may be calculated directly from the optical transmission following the logarithmic dependence given in the Lambert-Beer law. Optical transmission measurements for in-line monitoring of turbid oil-water emulsions The emulsion has a pH in the range of about 5 to about 10 and the polymer has a weight average molecular weight of at least 1000 and contains at least 95% by weight of monoallylamine. This patent describes a process of demulsifying an oil-in-water emulsion which comprises admixing with the emulsion a water-soluble polymer of monoallylamine that causes formation of and separation between an oil phase and an aqueous phase to occur. The results of this study are relevant for particle-stabilised emulsions and foams in a range of pharmaceutical, food and cosmetic formulations as well as ore flotation.Demulsification of oil-in-water emulsionsĭOE Office of Scientific and Technical Information (OSTI.GOV) The fundamental importance of this result is that the porous particles (or colloid particle agglomerates) may give an oil-in-water or water-in-oil Pickering emulsion depending on whether they are initially impregnated with oil or water. Similarly, the infusion of the porous supra-particles with water led to a different attachment at the air–water interface compared to the attachment of the same supra-particle when dry. We observed that supra-particles infused with water had different wettability and attachment positions at the oil–water interface compared with the same particles infused with oil. We report for the first time results of an MRI study of supra-particles attached to an air–water or an oil–water interface, which indicated that only the surface layer of the building block particles attaches to the liquid interface while the pore fluid was not displaced by the outer fluid.

We characterised the surface morphology and the inner structure of supra-particles by SEM imaging. This preparation technique allowed limited control over the porosity of the supra-particles by varying the initial concentration of the latex particle suspension, the rate of evaporation and the annealing temperature. We controlled the supra-particle size by varying the initial volume of the latex suspension drop, the latex particle concentration and the drop evaporation temperature. Spherical porous supra-particles were produced above 40 wt% initial concentration of the latex particles in the suspension, which had a rough surface, with a porous and amorphous structure. We annealed the dried supra-particles at the polymer's glass transition temperature to fuse partially their latex particle building blocks. We used a simple method for fabrication of millimetre-sized spherical porous supra-particles from much smaller monodisperse latex microparticles as building blocks by evaporation of a polystyrene sulphate latex suspension on a hot super-hydrophobic surface. We prepared model porous composite supra-particles and investigated the effect of the initial infused fluid phase on their attachment at the liquid–fluid interface.

Pickering emulsion simulation shear