Impact of bio-based binders on rheological properties of aqueous alumina slurries for tape casting

This work describes the preparation of concentrated alumina suspensions based on bio-sourced additives with a low environmental impact and rheological properties adapted to tape casting process. Natural polysaccharides extracted from plants fruits (pectin, psyllium…) were characterized (molar weight) identified as promising binders for substituting classical organic petrochemical industry. The behavior containing these was studied in flow oscillations. mechanical green tapes obtained different determined tensile experiment. paper studies relations between nature binder, suspension, ability cast final sintered tapes.