| abstract |
Disclosed is a fine cellulose fiber-containing material that includes fine cellulose fibers excellent in dispersion stability in an organic solvent, is suitable for composite with a plastic material, and can provide a composite material having high mechanical strength. The fine cellulose fiber composite of the present invention comprises a surfactant adsorbed on fine cellulose fibers having a carboxyl group content of 0.1 to 3 mmol / g. The fine cellulose fiber dispersion of the present invention contains the fine cellulose fiber composite and an organic solvent. The surfactant is preferably a cationic surfactant, and the organic solvent is preferably a polar solvent. The fine cellulose fiber dispersion of the present invention is obtained by a production method having the following steps. That is, after adding the surfactant to the aqueous dispersion of fine cellulose fibers, the aqueous dispersion is dehydrated and concentrated to obtain a solid containing the fine cellulose fibers, and the solid is added to the organic solvent. Disperse in the containing solvent. [Selection figure] None |