Nanocellulose and preparation method thereof

The invention provides nanocellulose capable of being gel-like, particle-shaped, powder-like or sheet-like, and a preparation method of the nanocellulose. The preparation method comprises steps as follows: a cellulose raw material is added to a reaction solution and is continuously stirred and react...

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Bibliographic Details
Main Authors SUN XIAOZHENG, PEI XIXIANG, SONG LIYING
Format Patent
LanguageChinese
English
Published 10.10.2017
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
DERIVATIVES THEREOF
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
POLYSACCHARIDES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:The invention provides nanocellulose capable of being gel-like, particle-shaped, powder-like or sheet-like, and a preparation method of the nanocellulose. The preparation method comprises steps as follows: a cellulose raw material is added to a reaction solution and is continuously stirred and reacts for 4.5-18.0 h at a specific pH value, the reaction is stopped with absolute ethyl alcohol, gel-like nanocellulose can be prepared from a reaction product through centrifugation, precipitation with a precipitator, washing with a washing liquid and suction filtration by a filter membrane, and if the gel-like nanocellulose is subjected to vacuum freeze drying, particle-shaped, powder-like or sheet-like nanocellulose can be prepared, wherein the reaction solution is a mixed solution of free radicals of nitroxide, periodate, sodium bromide and sodium hypochlorite. The method is short in treatment time, adopts a simple process and is suitable for large-scale industrial production. The nanocellulose product contains hi
Bibliography:Application Number: CN20171511863