Synthesis of Porous Emulsion-Templated Monoliths Using a Low-Energy Emulsification Batch Mixer
| Autor: | Kamal El Omari, Hervé Deleuze, Marc Birot, Claire Forgacz, Bruno Grassl, Yves Le Guer, Sylvain Caubet |
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| Přispěvatelé: | Institut de biochimie et génétique cellulaires (IBGC), Université Bordeaux Segalen - Bordeaux 2-Centre National de la Recherche Scientifique (CNRS), Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Pau et des Pays de l'Adour (UPPA), Institut des Sciences Moléculaires (ISM), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure de Chimie et de Physique de Bordeaux (ENSCPB)-Université Sciences et Technologies - Bordeaux 1-Université Montesquieu - Bordeaux 4-Institut de Chimie du CNRS (INC) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Morphology
Environmental Engineering Materials science porosity Polymers and Plastics Kraft black liquor lignin 02 engineering and technology 010402 general chemistry 01 natural sciences Rheology Homogeneity (physics) Materials Chemistry medicine [CHIM]Chemical Sciences Low-energy emulsifications Composite material Porosity emulsion 021001 nanoscience & nanotechnology High internal phase emulsions Rheological property 0104 chemical sciences Microcellular materials Kraft process Emulsification Polymerization Castor oil Rheological studies polymerization Volume fraction Emulsion Porous morphology Monolithic integrated circuits rheology Vegetable oils 0210 nano-technology Void size distribution Black liquor medicine.drug |
| Zdroj: | Journal of Polymers and the Environment Journal of Polymers and the Environment, Springer Verlag, 2013, 21 (3), pp.683-691. ⟨10.1007/s10924-013-0575-1⟩ |
| ISSN: | 1566-2543 1572-8900 |
| DOI: | 10.1007/s10924-013-0575-1⟩ |
| Popis: | cited By 6; International audience; Emulsion-templated porous monoliths based on castor oil-in-black liquor emulsions have been prepared using a low-energy emulsification technique. Lignins from black liquor polymerize in the continuous phase of the high internal phase emulsion to obtain highly microcellular materials with interconnected open porous structures. A two-step emulsification operating mode was developed in order to increase the maximum value of the castor-oil dispersed volume fraction obtained with the one-step emulsification mode (limited to 53 % of the total emulsion volume due to the very high viscosities of the fluids). A rheological study of the black liquor and of the prepared Medium Internal Phase Emulsions, have been conducted. Depending on the emulsification operating mode used, the morphology of the porous monoliths will differ. A rather low mean droplet size (about 6 μm) is obtained with the one-step mode, the two-step technique leads to a broader void size distribution and a further increase of added castor oil (up to 69 %) do not favor the homogeneity of the material. © 2013 Springer Science+Business Media New York. |
| Databáze: | OpenAIRE |
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