To obtain an aqueous cellulose solution in a good state of dissolution from relatively various types of cellulose by a simple and safe method by mirofibrillating a cellulose with a wet grinder and mixing the product of grinding with a hydrogen bonding inhibitor and an aqueous alkali solution to form a solution.
A cellulose obtained by microfibrillating cellulosic fibers with a wet grinder and having a content of microfibrils having a fiber diameter of 1μm or below of 95%, based on the total number is mixed with a hydrogen bonding inhibitor and an aqueous alkali solution to form a solution. It is desirable that the microfibrillation of cellulose is performed with a stone mill type wet grinder which generates shearing force and comprissive force by means of a rotating grinding stone. A desirable example of the dissolution method comprises mixing cellulose with the hydrogen bondng inhibitor, heating the resulting mixture, cooling the heated mixture, and mixing the final mixture with a cooled aqueous alkali solution to form a solution. The hydrogen bonding inhibitor is desirably urea.
YOKOMIZO HIROHIKO
TADOKORO FUMIHIKO
TAKENISHI SOICHIRO
