A dispersion of a cellulose nanofiber (CNF) and a cellulose nanocrystal (CNC) that maintains a physical property even after drying and redispersing and has a long pot life is provided. A composite of the CNF and the CNC having a higher rupture strength and a higher oxygen gas barrier property is also provided. The dispersion contains a CNF having a sulfate ester group and a CNC having a sulfate ester group. The composite contains the CNF having a sulfate ester group and the CNC having a sulfate ester group.

The present invention relates to surface-modified cellulose nanofibers, which are used to improve fiber-matrix adhesion, resulting in biodegradable nanofibrillated cellulose (NFC)-polyvinyl alcohol (PVOH) composites, which can be used to form structures such as films, with excellent mechanical performance. Particularly, the present invention relates to a bio composite resin composition wherein the surface of cellulose nanofibers have been chemically modified, a method for producing such composite resin composition and a casting-sheet composite body.

The present invention relates to surface-modified cellulose nanofibers, which are used to improve fiber-matrix adhesion, resulting in biodegradable nanofibrillated cellulose (NFC)-polyvinyl alcohol (PVOH) composites, which can be used to form structures such as films, with excellent mechanical performance. Particularly, the present invention relates to a bio composite resin composition wherein the surface of cellulose nanofibers have been chemically modified, a method for producing such composite resin composition and a casting-sheet composite body.

The present invention relates to a direct dissolving process for the production of polysaccharide fibers which contain (1.fwdarw.3)-glucan as a fiber-forming substance, with aqueous sodium hydroxide solution as a solvent, as well as to the fibers made thereby, and to their use.

The present invention relates to a direct dissolving process for the production of polysaccharide fibers which contain (1.fwdarw.3)-glucan as a fiber-forming substance, with aqueous sodium hydroxide solution as a solvent, as well as to the fibers made thereby, and to their use.

A fiber manufacturing method includes the following steps of: dissolving a polymer in a solvent to obtain a polymer solution; spraying the polymer solution into a liquid heated to a boiling point of the solvent or higher, and evaporating the solvent to precipitate a fibrous polymer in a sealed precipitation tank, the liquid being immiscible with the polymer and the solvent; conveying the precipitated fibrous polymer in a liquid from the precipitation tank; water-rinsing the fibrous polymer conveyed in the liquid in the conveying step in a sealed water-rinsing tank; conveying the water-rinsed fibrous polymer in a liquid from the water-rinsing tank; and cooling and condensing solvent gas that is generated in the spraying step and the water-rinsing step.

A fiber manufacturing method includes the following steps of: dissolving a polymer in a solvent to obtain a polymer solution; spraying the polymer solution into a liquid heated to a boiling point of the solvent or higher, and evaporating the solvent to precipitate a fibrous polymer in a sealed precipitation tank, the liquid being immiscible with the polymer and the solvent; conveying the precipitated fibrous polymer in a liquid from the precipitation tank; water-rinsing the fibrous polymer conveyed in the liquid in the conveying step in a sealed water-rinsing tank; conveying the water-rinsed fibrous polymer in a liquid from the water-rinsing tank; and cooling and condensing solvent gas that is generated in the spraying step and the water-rinsing step.

There is provided a use of a material comprising fibers as an oxygen barrier, wherein the fibers comprise native cellulose and dialcohol cellulose. There is also provided a material comprising fibers and having a density of at least 1200 kg/m.sup.3, wherein the fibers comprise native cellulose and dialcohol cellulose and the oxygen permeability of the material according to ASTM D3985 is below 30 ml.Math.?m/(m.sup.2.Math.kPa.Math.24 h) at 23? C. and 80% relative humidity.

There is provided a use of a material comprising fibers as an oxygen barrier, wherein the fibers comprise native cellulose and dialcohol cellulose. There is also provided a material comprising fibers and having a density of at least 1200 kg/m.sup.3, wherein the fibers comprise native cellulose and dialcohol cellulose and the oxygen permeability of the material according to ASTM D3985 is below 30 ml.Math.?m/(m.sup.2.Math.kPa.Math.24 h) at 23? C. and 80% relative humidity.

A fibrillated blend of lyocell and cellulosic pulp having a degree of polymerization of 200 to 1000 as measured by ASTM Test 1975-96, a method of making the blend and materials which incorporate the blend.