Coagulation of mixed organic systems and alumina particles for paste production
| Autor: | Cécile Pagnoux, M. Mougenot, Jean-François Baumard, Pascual Garcia Perez, Thierry Chartier |
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| Rok vydání: | 2006 |
| Předmět: |
Materials science
technology industry and agriculture Cationic polymerization Mineralogy 02 engineering and technology equipment and supplies 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Casting 6. Clean water Polyelectrolyte 0104 chemical sciences Suspension (chemistry) Chitosan chemistry.chemical_compound Anionic addition polymerization Sulfonate chemistry Chemical engineering Materials Chemistry Ceramics and Composites Coagulation (water treatment) 0210 nano-technology |
| Zdroj: | Journal of the European Ceramic Society. 26:3091-3098 |
| ISSN: | 0955-2219 |
| DOI: | 10.1016/j.jeurceramsoc.2005.10.001 |
| Popis: | Pastes of alumina with plastic properties were prepared by direct coagulation casting (DCC) of concentrated suspensions (≥50 vol%). Two polyelectrolytes were used to produce mixed systems of organic and mineral particles. An anionic polymer, bearing both sulfonate and carboxylate functions, was used to disperse efficiently alumina powder in water. A cationic polymer, the chitosan (CT), which complexes with the anionic one was added into the stable suspension to form an organic network dispersed into the ceramic matrix. The sequence of addition of the chitosan in the suspension appears to be a significant parameter in order to optimise the suspension formulation. After in situ coagulation, cylinders were extruded. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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