Preparation and mechanism analysis of morphology‐controlled cellulose nanocrystals via compound enzymatic hydrolysis of eucalyptus pulp
| Autor: | Xin Tong, Jean-Claude Roux, Xiaoquan Chen, Wenhao Shen, Meng-Yu Jia |
|---|---|
| Přispěvatelé: | Laboratoire Génie des procédés papetiers (LGP2), Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Polymers and Plastics
02 engineering and technology Cellulase engineering.material 010402 general chemistry 01 natural sciences Concentration ratio Hydrolysis [CHIM.GENI]Chemical Sciences/Chemical engineering Enzymatic hydrolysis Materials Chemistry biology Chemistry Pulp (paper) Thermal decomposition General Chemistry [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Cellulose fiber [CHIM.POLY]Chemical Sciences/Polymers Chemical engineering Xylanase engineering biology.protein 0210 nano-technology |
| Zdroj: | Journal of Applied Polymer Science Journal of Applied Polymer Science, Wiley, 2020, 137 (9), pp.48407. ⟨10.1002/app.48407⟩ |
| ISSN: | 0021-8995 1097-4628 |
| DOI: | 10.1002/app.48407⟩ |
| Popis: | International audience; First, making from eucalyptus cellulose fiber, the influences of different compound enzymolysis conditions on the morphology of cellulose nanocrystals (CNCs) were studied. Under the actions of the compound enzyme composed of cellulase and xylanase with the concentration ratio of 9:1, total enzyme concentrations of 10 and 500 U mL−1 and the hydrolysis time of 12 and 5 h, the rod-like CNCs (length 600 nm, width 30 nm) and the spherical CNCs (40 nm) were obtained, respectively. Subsequently, the crystallinities, chemical structures, and thermal stabilities of the rod-like and spherical CNCs revealed that, the CNCs structures were still similar to those of the eucalyptus cellulose fiber, the thermal decomposition temperatures of the rod-like and spherical CNCs (345, 343 °C) were a little lower than that of the eucalyptus cellulose fiber (364 °C). Lastly, the control mechanism of CNC morphology by the compound enzymatic hydrolysis was also discussed. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48407. |
| Databáze: | OpenAIRE |
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