PROCESS FOR PREPARING A HOMOGENEOUS CELLULOSE SOLUTION USING N-METHYLMORPHOLINE-N-OXIDE

摘要

PURPOSE: A manufacturing method for a homogeneous cellulose solution is provided to directly dissolve a cellulose powder to a liquid typed N-methylmorpholine-N-oxide in an extruder. CONSTITUTION: A simple method of preparing a homogeneous cellulose solution is disclosed, which comprises the steps of (a) preparing fibrillar cellulose powder; (b) injecting a molten liquid tertiary amine oxide solvent into a twin screw extruder; (c) feeding the cellulose powder of step (a) into a section of the twin screw extruder where the molten liquid tertiary amine oxide solvent fed in step (b) produces a well swollen paste with the cellulose powder fed in step (c); (d) dissolving the well swollen cellulose paste in the following melting sections in the twin screw extruder; and (e) stabilizing the solution obtained in step (d) in a storage tank.