| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing cellulose particles having a small average particle size and a low cellulose I-type crystallinity by suppressing aggregation of celluloses. <P>SOLUTION: The method for producing cellulose particles includes adding, as a grinding aid, 0.1-100 pts.mass of a compound having two or more ester groups in the molecule to 100 pts.mass of a low crystalline cellulose material having a cellulose I-type crystallinity of 33% or less as represented by following formula (1) and treating the mixture by means of a grinding machine in a dry process, wherein the average particle size of the cellulose particles is 25μm or less. Cellulose I crystallinity (%)= [(I<SB>22.6</SB>-I<SB>18.5</SB>)/I<SB>22.6</SB>]×100 (1). In the formula, I<SB>22.6</SB>denotes the diffraction intensity of a lattice plane (002 plane), and I<SB>18.5</SB>denotes the diffraction intensity of an amorphous part. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
