Holistic Rice Straw Nanocellulose and Hemicelluloses/Lignin Composite Films
| Autor: | Sixiao Hu, Feng Jiang, Jin Gu, You-Lo Hsieh |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Environmental Science and Management
General Chemical Engineering Composite number 02 engineering and technology 010402 general chemistry 01 natural sciences Nanocellulose Nanocomposites Analytical Chemistry chemistry.chemical_compound Environmental Chemistry Lignin Cellulose Agricultural waste Aqueous solution Nanocomposite Renewable Energy Sustainability and the Environment Cellulose nanocrystals General Chemistry Chemical Engineering 021001 nanoscience & nanotechnology Alkali metal 0104 chemical sciences chemistry Chemical engineering Yield (chemistry) Cellulose nanofibrils 0210 nano-technology Other Chemical Sciences Lignocellulose |
| Zdroj: | ACS Sustainable Chemistry and Engineering, vol 4, iss 3 ACS Sustainable Chemistry & Engineering, vol 4, iss 3 Hu, S; Gu, J; Jiang, F; & Hsieh, YL. (2016). Holistic Rice Straw Nanocellulose and Hemicelluloses/Lignin Composite Films. ACS Sustainable Chemistry and Engineering, 4(3), 728-737. doi: 10.1021/acssuschemeng.5b00600. UC Davis: Retrieved from: http://www.escholarship.org/uc/item/9zv264ck |
| DOI: | 10.1021/acssuschemeng.5b00600. |
| Popis: | © 2016 American Chemical Society. Rice straw was dewaxed and optimally separated into cellulose-rich solid and hemicelluloses/lignin (HL)-rich aqueous suspension with two 5 min alkali immersions (4% NaOH, 70 °C). Alkaline cellulose nanofibrils (ACNFs) were derived, at 36.5% yield from the original rice straw, by TEMPO-mediated oxidation and mechanical defibrillation of cellulose-rich portion whereas HL was isolated at 18.1% yield from the aqueous suspension. Aqueous HL solutions containing up to 30% ACNF as well as three other nanocelluloses, i.e., cellulose nanocrystals (CNC), TEMPO oxidized and aqueous counter collision generated CNFs (OCNF and ACCNF) were cast into films to exhibit significantly improved flexibility, transparencies, mechanical and moisture barrier properties. The structure-properties relations of these holistic composite films were analyzed systematically, in particular regarding to the types and loadings of the different nanocelluloses. |
| Databáze: | OpenAIRE |
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