Described herein are apparatuses and methods of creating fibers, such as microfibers and nanofibers, that are composed of saccharides. The methods discussed herein employ centrifugal forces to transform saccharide material into fibers. Apparatuses that may be used to create saccharide fibers are also described. Fiber producing devices with features that enhance fiber production and adaptability to different types of fiber are described.

A cellulosic particle contains cellulose as its base constituent, and the percentage water absorption of the cellulosic particle measured by method B in ISO 15512:1999 is 11% or more and 20% or less.

Techniques and products are described for coloring acetylated wood products. An acetylated wood product can be impregnated by a coloring medium within a chamber and the colorant or colorants contained within the coloring medium can be fixed to the acetylated wood product by the application of heat or by application of radio frequency radiation to color any external surface or interior region of the acetylated wood product which has been impregnated by the coloring medium.

The present disclosure provides methods for producing carboxylated nanocelluloses. Compared with conventional methods, the methods of the present disclosure are simple and cost-effective in the production of carboxylated (or carboxy) nanocelluloses, in embodiments nanofibers and/or nanowhiskers, directly from raw biomass, including lignocellulose wood, non-wood sources, non-lignocellulose wood, lignocellulose or pure cellulose. The carboxy groups on the surface of nanocellulose thus produced can then be easily modified into functional derivatives such as amide, acetate, ether, ester, etc. The resulting nanocelluloses may be used to form purifying agents and/or filters to remove impurities from wastewater.

The present disclosure provides compositions and methods relating to hydrophobic esterified nanocellulose.

The present disclosure provides compositions and methods relating to hydrophobic esterified nanocellulose.

The invention relates to a method (1) for manufacturing cellulose nanocrystals (3) comprising preparing (10) a deep eutectic solvent (102) by mixing a quaternary ammonium salt (100) and a hydrogen bond donor compound (101) in a mechanochemical reactor (4), forming (11) a reaction medium (110) comprising cellulosic fibres (2) and the deep eutectic solvent (102), and subjecting the reaction medium (110) to a mechanochemical treatment (12) so as to obtain cellulose nanocrystals (3) from the cellulosic fibres (2). This mechanochemical treatment (12) enables the acidic hydrolysis of the amorphous cellulose and the surface modification of the cellulose nanocrystals (3), while activating this reaction so as to limit the temperature and treatment time in comparison with existing solutions.

The invention relates to a method (1) for manufacturing cellulose nanocrystals (3) comprising preparing (10) a deep eutectic solvent (102) by mixing a quaternary ammonium salt (100) and a hydrogen bond donor compound (101) in a mechanochemical reactor (4), forming (11) a reaction medium (110) comprising cellulosic fibres (2) and the deep eutectic solvent (102), and subjecting the reaction medium (110) to a mechanochemical treatment (12) so as to obtain cellulose nanocrystals (3) from the cellulosic fibres (2). This mechanochemical treatment (12) enables the acidic hydrolysis of the amorphous cellulose and the surface modification of the cellulose nanocrystals (3), while activating this reaction so as to limit the temperature and treatment time in comparison with existing solutions.

Provided is a method for producing hydroxypropyl methylcellulose acetate succinate by which particle density increment is suppressed and dissolution time is shortened. The method for producing hydroxypropyl methylcellulose acetate succinate essentially includes a liquid removal step, a first drying step, and a second drying step, wherein the first drying step involves drying of hydroxypropyl methylcellulose acetate succinate using a fluid-bed dryer until it reaches a water content of 30% by mass while maintaining the product temperature at 28 C. or lower.

Provided is an industrial and efficient method for producing hydroxypropyl methylcellulose acetate succinate that exhibits an enhanced dissolution rate into a solvent. This method includes a liquid removal step, a first drying step, and a second drying step, wherein the first drying step involves drying hydroxypropyl methylcellulose acetate succinate under reduced pressure until it reaches a water content above 0% by mass and lower than or equal to 30% by mass while maintaining the product temperature above 0 C. and lower than or equal to 25 C.