Determination of the stiffness of cellulose nanowhiskers and the fiber-matrix interface in a nanocomposite using Raman spectroscopy
Determination of the stiffness of cellulose nanowhiskers and the fiber-matrix interface in a nanocomposite using Raman spectroscopy
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DOI：
10.1063/1.2963491
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发表时间：
2008-07-21
影响因子：
4
通讯作者：
Eichhorn, Stephen J.
中科院分区：
文献类型：
--
作者：
Rusli, Rafeadah;Eichhorn, Stephen J.
报道了直径为10 nm的纤维素纳米晶须的硬度。这些晶须是通过酸解产生的。这些晶须分散在环氧树脂中，放置在相同材料的梁的表面上，并使用四点弯曲装置在拉伸和压缩中变形。利用拉曼光谱跟踪晶须的分子形变表明，通过晶须弥散和基质增强的理论模型，可以推导出晶须的硬度。作为研究纳米复合材料的一种手段，本文还讨论了晶须的脱粘、基体屈服和屈曲的影响。(C)2008年美国物理研究所。
The stiffness of 10 nm diameter cellulose nanowhiskers is reported. These whiskers are produced by acid hydrolysis. These whiskers are dispersed in epoxy resin and placed on the surface of a beam of the same material and deformed in tension and compression using a four-point bending device. By following the molecular deformation of the whiskers using Raman spectroscopy it is shown that, by theoretical models of their dispersion and matrix reinforcement, their stiffness can be derived. The effects of debonding, matrix yielding, and buckling of whiskers are also discussed using this method as a means for studying nanocomposite materials. (C) 2008 American Institute of Physics.