Cellular ceramics by gelatin gelcasting of emulsified suspensions with sunflower oil

摘要: Abstract Highly porous cellular ceramics were prepared by a versatile method combining emulsification of sunflower oil in alumina suspension, using collagen as surfactant, stabilizer and gelcasting additive. Emulsified suspensions show shear thinning behavior at temperatures, their rheology was related to the volume fraction dispersed droplets, contents stirring rate, based on suitable Taguchi plan. This provides guidelines for dependence microstructural features these processing parameters. The robustness demonstrated ability perform early stages burnout relatively high heating rates, without risks collapse or onset factures resulting ceramics. Combined DTG/DTA/FTIR studies used analyse stages, provide minimize emissions gases with safety environmental risks.