期刊
CARBOHYDRATE POLYMERS
卷 136, 期 -, 页码 1027-1034出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2015.09.115
关键词
Nanofibriled cellulose (NFC); Corn husks; PVA; Light transmittance; Tensile strength
资金
- National Natural Science Foundation of China [31270590]
This work was aimed at fabricating and characterizing poly(vinyl alcohol) films that were reinforced by nanofibrillated corn husk celluloses using a combination of chemical pretreatments and ultrasonication. The obtained nanofibrillated celluloses (NFCs) possessed a narrow width ranging from 50 to 250 nm and a high aspect ratio (394). The crystalline type of NFC was cellulose I type. Compared with the original corn husks, the NCF crystallinity and thermal stability increased due to the removal of the hemicelluloses and lignin. PVA films containing different NFC concentrations (0.5%, 1%, 3%, 5%, 7% and 9%, w/w, dry basis) were examined. The 1% PVA/NFC reinforced films exhibited a highly visible light transmittance of 80%, and its tensile strength and the tensile strain at break were increased by 1.47 and 1.80 times compared to that of the pure PVA film, respectively. The NFC with high aspect ratio and high crystallinity is beneficial to the improvement of the mechanical strength and thermal stability. (c) 2015 Elsevier Ltd. All rights reserved.
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