| 摘要 |
PROBLEM TO BE SOLVED: To provide a production method with excellent productivity by which low crystalline cellulose having lowered cellulose I crystallinity is efficiently obtained while suppressing reduction in molecular weight.SOLUTION: The method for producing low crystalline cellulose includes crushing a cellulose-containing raw material, in which a cellulose content in a residual component except water is ≥20 mass%, the following cellulose I crystallinity exceeds 33%, a molecular weight of cellulose is 100,000-1,000,000, and a water content is ≤4.5 mass%, with a crusher, so that the cellulose I crystallinity is lowered to 1/2.5 to 1/100 after the crushing: cellulose I crystallinity (%)=[(I-I)/I]×100, wherein Idenotes diffraction intensity of a lattice plane (002 plane) (2θ=22.6°) in X-ray diffraction; and Idenotes diffraction intensity of an amorphous moiety (2θ=18.5°). |
