POLYGLYCEROL NANO-WHISKER CELLULOSE DENDRIMER NANOMATERIAL AND PREPARATION METHOD THEREFOR

• Main Authors: XU, Shuqin, CHEN, Jinghua, MAO, Baoliang
• Format: Patent
• Language: Chinese; English; French
• Published: 14.07.2022
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

Disclosed are a polyglycerol nano-whisker cellulose dendrimer nanomaterial and a preparation method therefor. In the present invention, the method comprises: crushing raw cotton linter puree into cotton-like fibers, feeding same into sulfuric acid for reaction, and passing same through centrifugation, dialysis and ultrasonic cell disruption technology so as to obtain a nano-whisker cellulose; further, performing dialysis by using a TEMPO oxidation method, and freeze-drying to obtain carboxylated nano-whisker cellulose; and further feeding the carboxylated nanowhiskers into DMF, carrying out nitrogen protection, stirring and heating, gradually grafting glycidol onto surface hydroxyl groups, and once ended, carrying out centrifugation, vacuum drying, dialysis and freeze-drying to obtain a first-generation polyglycerolated nanowhisker cellulose nanomaterial. In the method, dendrimers having different particle size ranges may be prepared and obtained by controlling the number of reaction times, surfaces thereof c