| 摘要 |
PROBLEM TO BE SOLVED: To provide powdered cellulose with high strength and excellent powder fluidity, in other words, powdered cellulose with a large average particle size and a high apparent specific gravity, or a high powder falling speed.SOLUTION: The powdered cellulose is obtained by hydrolysis process of a pulp with a mineral acid. With the premise that the average particle size value of the powdered cellulose is x, the apparent specific gravity value y, and the powder falling speed z, the powdered cellulose satisfies either y≥-0.0164x+0.9392 or z≥-0.0228x+1.5493 in a range wherein the average particle size (x) is 5-60 μm. |
