| abstract |
A cellulose nanofiber having high heat resistance and excellent reinforcing effect, a method for efficiently producing the cellulose nanofiber, a composite resin composition containing the cellulose nanofiber, and molding the composite resin composition A molded body is provided. The cellulose nanofiber of the present invention has an average degree of polymerization of 600 or more and 30000 or less, an aspect ratio of 20 to 10000, an average diameter of 1 to 800 nm, and an Iβ type in the X-ray diffraction pattern. It has a crystal peak and is characterized in that the hydroxyl group is chemically modified with a modifying group. [Selection figure] None |