CELLULOSE FIBERS AND METHOD FOR PRODUCING SAME, ULTRAFINE CELLULOSE FIBER DISPERSION AND METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING ULTRAFINE CELLULOSE FIBERS

摘要

Provided is, for example, a method for producing cellulose fibers, which includes: an oxidation step of obtaining cellulose oxide fibers by oxidizing a cellulosic raw material in a reaction liquid that contains an N-oxyl compound and a co-oxidizing agent; a reduction step of obtaining reduced cellulose oxide fibers by reducing the cellulose oxide fibers in a reaction liquid that contains a reducing agent; and a drying step of drying the reduced cellulose oxide fibers. Cellulose fibers obtained by drying the reduced cellulose oxide fibers can be finely dispersed in a solvent.