Cellulose molded body and hydrogel, and method for producing the same
AssigneeJapan Agency for Marine-Earth Science and Technology
InventorNoriyuki ISOBE
Life of this patent
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Abstract
A method for producing a hydrogel according to the present disclosure includes: (A1) a step of preparing an object to be treated including a water-soluble cellulose-based compound and water; (B1) a step of heating the object to be treated so as to separate water from the object to be treated; and (C1) a step of cooling the object to be treated that has acquired an increased content percentage of the cellulose-based compound through the treatment in step (B1), and a series of steps from step (B1) to step (C1) are repeated until the content percentage of the cellulose-based compound in the object to be treated reaches 10% by mass or more.
Claims5
A method for producing a cellulose-based molded body, the method comprising:
- (A2) a step of dissolving cellulose in an aqueous solution of lithium bromide under the temperature conditions of 100° C. or higher to obtain a cellulose-containing liquid;
- (B2) a step of obtaining a molded body from the cellulose-containing liquid;
- (C2) a step of removing lithium bromide from the molded body by washing the molded body;
- (D2) a step of heating the molded body after the removal of lithium bromide in a state of having pressing force applied to the molded body;
- and
- (E2) a step of obtaining a cellulose-based molded body having a content percentage of the cellulose of 95% by mass or more through the heating treatment in step (D2).
Dependencies are inferred from the claim text.