Porous biomaterials by using supercritical fluids emulsions

Different authors have investigated the production of porous polymeric materials using supercritical CO2 as a solvent and/or foaming agent. The removal of the template phase is simple since CO2 reverts to gas phase upon depressurization. More recently and on the basis of the experience achieved on the synthesis of porous cross-linked polymers through oil-in-water emulsion templating, the authors demonstrated that the reaction conditions can be specifically modified to generate well-defined macroporous biopolymer monoliths by usign SCCO2 as a porogenic solvent. No organic solvent is required in this porcess: just water and CO2