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Direct Preparation of Cellulose Nanofibers from Bamboo by Nitric Acid and Hydrogen Peroxide Enables Fibrillation via a Cooperative Mechanism.
- Source :
-
Nanomaterials (2079-4991) . May2020, Vol. 10 Issue 5, p943. 1p. - Publication Year :
- 2020
-
Abstract
- Separating the fibers, deconstructing both the interlamellar structures and the intermicrofibrils structures in the cell wall, and cleaving the amorphous regions of cellulose (all reached in one bath chemical-assisted treatment), then extracting cellulose nanofibers (CNFs) from biomass, is both challenging and imperative. A simple, cost-effective and green strategy for extracting CNFs from bamboo using nitric acid and hydrogen peroxide (NCHP), to enable fibrillation via a cooperative mechanism, is demonstrated herein. NCHP-CNFs 13.1 ± 2.0 nm wide, with a high aspect ratio, 74% crystallinity, excellent UV resistance and high thermal stability, were successfully extracted by treatment in HNO3 aqueous solution, at a concentration of 3.2 mol/L, and treatment with 60.00 mmol/g H2O2 at 50 °C for 48 h. The yields of NCHP-CNFs reached 73% and 99% based on biomass and cellulose, respectively, due to the high delignification selectivity of OH+ and the mild aqueous conditions during the NCHP treatment. These NCHP-CNFs with excellent UV resistance can potentially be applied in the field of UV-resistant coatings, to replace organic and inorganic materials. [ABSTRACT FROM AUTHOR]
- Subjects :
- *NITRIC acid
*CELLULOSE
*NANOFIBERS
*BAMBOO
*THERMAL stability
*CELL anatomy
Subjects
Details
- Language :
- English
- ISSN :
- 20794991
- Volume :
- 10
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Nanomaterials (2079-4991)
- Publication Type :
- Academic Journal
- Accession number :
- 143674845
- Full Text :
- https://doi.org/10.3390/nano10050943