Comparison of the characteristics of cellulose microfibril aggregates of wood, rice straw and potato tuber
Comparison of the characteristics of cellulose microfibril aggregates of wood, rice straw and potato tuber
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DOI：
10.1007/s10570-009-9334-9
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发表时间：
2009-12-01
期刊：
影响因子：
5.7
通讯作者：
Yano, Hiroyuki
中科院分区：
文献类型：
--
作者：
Abe, Kentaro;Yano, Hiroyuki
本研究的重点一直是分离纤维素微纤丝聚集体的一次性研磨处理从木材，稻草和马铃薯块茎，并比较其形态和力学性能。场发射扫描电子显微镜图像显示，木材中分离的微纤丝聚集体的直径范围为12-20 nm，小于稻草和马铃薯块茎中分离的微纤丝聚集体的直径范围（分别为12-35 nm和12-55 nm）。这些差异甚至在研磨前的纯化稻草和马铃薯块茎中也观察到，但在纯化木材中几乎没有观察到。X射线衍射分析和拉伸试验结果表明，在干燥状态下，纤维素结晶度和杨氏模量的分离微纤维聚集体的来源之间没有显着差异。这些结果表明，无论植物来源和组织功能如何，干燥状态下纤维素微纤丝聚集体的固有特性都非常相似。
The focus of this study has been to isolate cellulose microfibril aggregates by the one-time grinding treatment from wood, rice straw and potato tuber, and to compare their morphological and mechanical properties. Field emission scanning electron microscopy images showed that the diameter range of isolated microfibril aggregates from wood, 12-20 nm, was smaller than those from rice straw and potato tuber, 12-35 nm and 12-55 nm, respectively. These differences were observed even in the purified rice straws and potato tuber before the grinder treatment, but were hardly observed in the purified wood. The results of X-ray analysis and tensile tests indicated that there were no significant differences among the sources in the cellulose crystallinity and Young's modulus of the isolated microfibril aggregates in the dry state. These results suggest that the inherent characteristics of cellulose microfibril aggregates in the dry state are very similar regardless of plant sources and tissue functions.