Cellulose nanofiber, production method of same and cellulose nanofiber dispersion

摘要

Disclosed is a process for producing a cellulose nanofiber, which is characterized by comprising the following steps: an oxidation treatment step of oxidizing a natural cellulose in a neutral or acidic reaction solution containing an N-oxyl compound and an oxidizing agent which can oxidize an aldehyde group; and a dispersion step of dispersing the natural cellulose which has been treated in the oxidation treatment step in a medium. The process enables the production of a cellulose nanofiber having a long fiber length and high strength.