A low-energy emulsification batch mixer for concentrated oil-in-water emulsions
| Autor: | Kamal El Omari, Eric Normandin, Yves Le Guer, Bruno Grassl, Sylvain Caubet |
|---|---|
| Přispěvatelé: | LABORATOIRE DE THERMIQUE ENERGETIQUE ET PROCEDES (EA1932) (LATEP), Université de Pau et des Pays de l'Adour (UPPA), Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS), Physico-chimie des polymères (PCP), Centre National de la Recherche Scientifique (CNRS)-Université de Pau et des Pays de l'Adour (UPPA), Plateau Innov'Adour. |
| Rok vydání: | 2010 |
| Předmět: |
Work (thermodynamics)
Environmental Engineering General Chemical Engineering Dispersity Analytical chemistry 02 engineering and technology 010402 general chemistry 01 natural sciences Pulmonary surfactant Rheology [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering Chemistry [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment Laminar flow Rotational speed 021001 nanoscience & nanotechnology 0104 chemical sciences Batch mixer Droplet size distribution control Low energy emulsification Scientific method Emulsion 0210 nano-technology Concentrated emulsions Biotechnology |
| Zdroj: | AIChE Journal. 57:27-39 |
| ISSN: | 0001-1541 |
| DOI: | 10.1002/aic.12253 |
| Popis: | nombre de pages : 14; The presented work shows the formation of a monodisperse High Internal Phase Ratio (HIPR) Oil-in-Water (O/W) emulsion using a new type of a two-rod batch mixer. The mixture components have sharply different viscosities (1/3400 for W/O) and similar densities (1/0.974 for W/O). The oil ratio in the mixture remains constant at 91% [w/w] for each experiment. The simple design of the new mixer leads to a low-energy process, characterized by very low rotational speed, laminar flow and no need for fluid heating. The droplet size distribution during the emulsification was investigated according to different physical and formulation parameters such as stirring time, rotational speed, surfactant type, concentration, and salt addition. We show that all studied parameters except salt addition allow a precise control of the concentrated emulsion droplet size distribution, which governs the rheological behavior of the emulsion and its stability. The formed HIPR emulsion shows two shear-thinning domains. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text