FIELD: manufacturing technology.
SUBSTANCE: invention relates to a fine cellulose fiber which can be used in a variety of composite materials and coating agents, and can also be used to form a sheet or film. Method of producing fine cellulose fibers involves impregnating cellulose with a fibrillating solution containing a polar aprotic solvent and a vinyl ester of a carboxylic acid or an aldehyde for fibrillation of cellulose. Polar aprotic solvent has a donor number of 26 or more. Content of vinyl ester of carboxylic acid or aldehyde is 0.05–50 wt% relative to total amount of fibrillating solution.
EFFECT: providing an energy-saving method of producing fine cellulose fibers which are nanosized, have a high degree of crystallinity and are less vulnerable to damage to the shape of the fibers.
13 cl, 15 dwg, 2 tbl, 28 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING CELLULOSE FINE FIBERS | 2017 |
|
RU2708851C1 |
| CELLULOSE NANOFIBERS MODIFIED WITH SULFURIC ACID ESTERIFICATION METHOD AND CELLULOSE NANOFIBRES PRODUCTION METHOD | 2018 |
|
RU2735138C1 |
| CELLULOSE DERIVATIVES | 2018 |
|
RU2781048C2 |
| METHOD OF PREPARING OPTICALLY ACTIVE ESTERS OF ERYTHRO-3-AMINO-2- HYDROXYBUTYRIC ACIDS AND CORRESPONDING ACIDS | 1997 |
|
RU2169138C2 |
| ATOPIC DERMATITIS-SUPPRESSING FIBRE, FIBRE AGGREGATE AND FIBRE PRODUCT, METHOD FOR USING SAME AND METHOD FOR SUPPRESSING ATOPIC DERMATITIS | 2014 |
|
RU2658056C2 |
| PROCESS FOR PREPARING VINYL ESTERS OF SULFONYL FLUORIDES | 0 |
|
SU1080742A3 |
| NANOCELLULOSE MATERIAL OBTAINED FROM TOBACCO | 2018 |
|
RU2763550C2 |
| METHOD FOR OBTAINING QUINOLONE DERIVATIVE | 0 |
|
SU1836367A3 |
| METHOD OF OBTAINING SUSPENSIONS OF NANOFIBROUS CELLULOSE | 2010 |
|
RU2549323C2 |
| METHOD OF PRODUCING BACTERIAL CELLULOSE NANOFIBERS | 2019 |
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RU2708307C1 |
