| abstract |
A method for preparing a porous framework comprising the steps consisting of: a) preparing an alkaline aqueous solution comprising an amount of at least one polysaccharide, an amount of a covalent crosslinking agent and an amount of a porogen, b) transforming the solution in a hydrogel by placing said solution at a temperature of 4 ° C to 80 ° C for a time sufficient to allow cross-linking of said amount of polysaccharide, c) submerging said hydrogel in an aqueous solution, d) washing the porous shell obtained in stage c). |