PROCESS FOR PREPARING FUNCTIONALIZED CELLULOSE FIBERS
The present invention relates to a process for preparing functionalized cellulose fibers, the process comprising the following steps: a/ preparing a composition C1 comprising water and cellulose fibers, b/ preparing a composition C2 comprising water, a hydrophobic agent and a dispersant, c/ preparing a composition C3 by mixing the compositions C1 and C2 at a temperature T3 above or equal to the melting point of the hydrophobic agent, d/ functionalizing the cellulose fibers, by reaction between the cellulose fibers and the hydrophobic agent, in the presence of the dispersant, at a temperature T4 above or equal to the melting point of the hydrophobic agent. The present invention also relates to a process for preparing a hydrophobic film from these functionalized cellulose fibers.