A method for testing the elastic modulus of single cellulose fibrils via atomic force microscopy
A method for testing the elastic modulus of single cellulose fibrils via atomic force microscopy
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DOI：
10.1016/j.compositesa.2008.09.007
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发表时间：
2008-12-01
影响因子：
8.7
通讯作者：
Wang, Siquin
中科院分区：
文献类型：
--
作者：
Cheng, Qingzheng;Wang, Siquin
利用原子力显微镜（AFM）对纤维素原纤进行纳米级三点弯曲实验，测量其纳米牛顿力和纳米级挠度，并利用纯弯曲公式计算单根原纤的弹性模量。在计算这些测试过程中原纤维的偏转时，很明显，AFM针尖穿透纤维素原纤维表面的部分是必须考虑的因素。通过高强度超声处理分离的前Lyocell纤维的直径约为170 μ m的纤维素原纤维的弹性模量被评估为93 GPa。(C)2008爱思唯尔有限公司版权所有。
In this study, the atomic force microscope (AFM) was used to measure the nano-Newton forces and nanometer deflections Of Cellulose fibrils by nano-scale three-point bending tests, and the elastic moduli of single fibrils were evaluated by a pure bending formula. In calculating the deflections of fibrils during these tests, it became apparent that portions of the AFM tips penetrated the cellulose fibril Surfaces was a factor that had to be taken into account. The elastic modulus of cellulose fibrils, of diameter approximately 170 inn isolated front Lyocell fibers by high intensity ultrasonication was evaluated to be 93 GPa. (C) 2008 Elsevier Ltd. All rights reserved.