PROCESS FOR THE PRODUCTION OF CHITOSAN-BASED HYDROGEL AND NEGATIVELY LOADED POLYELECTROLYTES AND POROUS ALVEOLAR MATERIALS FROM SAID HYDROGEL

摘要

The subject of the present invention is a method for manufacturing a hydrogel comprising the following successive steps: a first step of supplying at least one powder of an anionic polymer (A) and at least one chitosan powder ( B) comprising amine functions (-NH2); a second step of dry blending at least the powders (A) and (B) of the first step to form a mixture of powders; a third step of suspending the mixture of powders obtained at the end of the second step in an aqueous medium having a pH making it possible to solubilize the anionic polymer (A) without solubilizing the chitosan (B); - A fourth step of adding an acid to the suspension obtained at the end of the third step so as to form the hydrogel.