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- W4210408214 endingPage "862" @default.
- W4210408214 startingPage "847" @default.
- W4210408214 abstract "Cellulose fibrils are the structural backbone of plants and, if carefully liberated from biomass, a promising building block for a bio-based society. The mechanism of the mechanical release─fibrillation─is not yet understood, which hinders efficient production with the required reliable quality. One promising process for fine fibrillation and total fibrillation of cellulose is cavitation. In this study, we investigate the cavitation treatment of dissolving, enzymatically pretreated, and derivatized (TEMPO oxidized and carboxymethylated) cellulose fiber pulp by hydrodynamic and acoustic (i.e., sonication) cavitation. The derivatized fibers exhibited significant damage from the cavitation treatment, and sonication efficiently fibrillated the fibers into nanocellulose with an elementary fibril thickness. The breakage of cellulose fibers and fibrils depends on the number of cavitation treatment events. In assessing the damage to the fiber, we presume that microstreaming in the vicinity of imploding cavities breaks the fiber into fibrils, most likely by bending. A simple model showed the correlation between the fibrillation of the carboxymethylated cellulose (CMCe) fibers, the sonication power and time, and the relative size of the active zone below the sonication horn." @default.
- W4210408214 created "2022-02-08" @default.
- W4210408214 creator A5034864908 @default.
- W4210408214 creator A5044737156 @default.
- W4210408214 creator A5048572853 @default.
- W4210408214 creator A5051530792 @default.
- W4210408214 creator A5055608808 @default.
- W4210408214 creator A5062482094 @default.
- W4210408214 creator A5072327167 @default.
- W4210408214 creator A5085153680 @default.
- W4210408214 date "2022-01-31" @default.
- W4210408214 modified "2023-10-14" @default.
- W4210408214 title "Cavitation Fibrillation of Cellulose Fiber" @default.
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