This disclosure relates to improved packaging materials containing oxidized cellulose. More particularly, this disclosure relates to improved packaging materials containing oxidized cellulose exhibiting one or more of improved odor control and/or improved antimicrobial properties. This disclosure further relates to the use of oxidized cellulose in packaging materials as an anti-counterfeiting agent, and methods of testing for the same.

Provided is an oxidized microfibrillated cellulose fiber having a Canada standard freeness of less than 200 mL and an average fiber diameter of not less than 500 nm. Said fiber provides a composition having excellent water retention ability.

A visibly transparent, homogeneous UV-blocking cellulose nanocrystal/lignin nanocomposite film and a method of making the same. The film is made by dispersing cellulose nanocrystals and lignin in an aqueous, alkaline solution to yield a dispersion; casting the dispersion onto a substrate; and evaporating the aqueous, alkaline solution to yield a homogeneous, visibly transparent film that at least partially absorbs ultraviolet (UV) radiation.

A visibly transparent, homogeneous UV-blocking cellulose nanocrystal/lignin nanocomposite film and a method of making the same. The film is made by dispersing cellulose nanocrystals and lignin in an aqueous, alkaline solution to yield a dispersion; casting the dispersion onto a substrate; and evaporating the aqueous, alkaline solution to yield a homogeneous, visibly transparent film that at least partially absorbs ultraviolet (UV) radiation.

The present invention relates to a method for producing a denatured cellulose fiber cake including carrying out a solid-liquid separation of a dispersion containing denatured cellulose fibers under the conditions of a centrifugal force of a centrifuge of 50 G or more and 600 G or less (step A). According to the present invention, a new method for producing a resin composition containing denatured cellulose fibers, and a new method for producing a denatured cellulose fiber cake, a shortened anionically denatured cellulose fiber cake, modified cellulose fibers, or fine cellulose fibers which can be used therefor can be provided.

The present invention relates to a method for producing a denatured cellulose fiber cake including carrying out a solid-liquid separation of a dispersion containing denatured cellulose fibers under the conditions of a centrifugal force of a centrifuge of 50 G or more and 600 G or less (step A). According to the present invention, a new method for producing a resin composition containing denatured cellulose fibers, and a new method for producing a denatured cellulose fiber cake, a shortened anionically denatured cellulose fiber cake, modified cellulose fibers, or fine cellulose fibers which can be used therefor can be provided.

An object of the present disclosure is to provide a cellulose acetate film having excellent bending properties and high transparency. The subject cellulose acetate film contains cellulose acetate having a cellulose triacetate I crystal structure, the cellulose acetate film having a light transmittance of 70% or higher at 660 nm.

An object of the present disclosure is to provide a cellulose acetate film having excellent bending properties and high transparency. The subject cellulose acetate film contains cellulose acetate having a cellulose triacetate I crystal structure, the cellulose acetate film having a light transmittance of 70% or higher at 660 nm.

A method for the synthesis of alkyl ω-carboxy(hydroxyethyl) polysaccharides is described. The method includes methylating or ethylating a polysaccharide or providing a methylated or ethylated polysaccharide, hydroxyethylating the methylated or ethylated polysaccharide, and oxidizing the hydroxyethylated polysaccharide to form the ω-carboxy(hydroxyethyl) polysaccharide. A method for the synthesis of oxidized polysaccharides is also described. The method includes hydroxypropylating a polysaccharide and oxidizing the hydroxypropylated polysaccharides. A method for the production of a solid capable of forming a hydrogel is also described. The method includes combining a first solution comprising an oxidized oligo(hydroxypropyl) polysaccharide bearing one or more ketone groups with a second solution comprising an amine substituted polysaccharide to form a third solution, and removing solvent from the third solution to form the solid, or adding an additional solvent to the third solution to precipitate the solid. Novel polysaccharides and hydrogels prepared according to these methods are also described.

Several embodiments of NO releasing structures are disclosed. In some embodiments, the structures are covalently modified to store and release nitric oxide. Some embodiments pertain to methods of making and use of these structures. The covalently modified polymer structures may be tailored to release nitric oxide in a controlled manner and are useful for treatment of various medical conditions.