Effects of delignification in the production of plant-based cellulose nanofibers for optically transparent nanocomposites
Effects of delignification in the production of plant-based cellulose nanofibers for optically transparent nanocomposites
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DOI：
10.1016/j.compscitech.2011.05.006
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发表时间：
2011-07-07
影响因子：
9.1
通讯作者：
Yano, Hiroyuki
中科院分区：
文献类型：
--
作者：
Okahisa, Yoko;Abe, Kentaro;Yano, Hiroyuki
在纳米原纤化之前的制浆程序需要相当多的化学处理以浸出基质物质。特别地，循环地应用碳酸钠（NaClO2）溶液处理以去除木质素。在这项研究中，我们澄清了脱木质素的纤维素纳米纤维和纳米复合材料的生产中的影响，通过比较植物的木质素（2岁的木质素成熟竹秆）和没有木质素（未成熟的竹笋秆）。我们得出结论，NaClO2处理可能降解了纤维素纳米纤维，因为我们发现从成熟竹子中提取的纤维素纳米纤维的形态和性能与从未成熟竹子中提取的纤维素纳米纤维相比没有优势。此外，未成熟竹纤维素纳米复合材料的透光率较高，即使在较低的波长。(C)2011爱思唯尔有限公司版权所有。
The pulp-making procedures prior to nanofibrillation require considerable chemical treatments to leach the matrix substances. In particular, the sodium chlorite (NaClO2) solution treatment is cyclically applied to remove lignin. In this study, we clarified the effects of delignification in the production of cellulose nanofibers and nanocomposites through a comparison of plants with lignin (2 year old lignified mature bamboo culms) and without lignin (immature bamboo shoot culms). We concluded that the NaClO2 treatment might have degraded the cellulose nanofibers, as we found that the morphology and properties of the cellulose nanofibers extracted from mature bamboo had no advantages over the nanofibers from immature bamboo. In addition, the light transmittance of the cellulose nanocomposites from immature bamboo was higher even at lower wavelengths. (C) 2011 Elsevier Ltd. All rights reserved.