A cohesive law for carbon nanotube/polymer interfaces based on the van der Waals force
A cohesive law for carbon nanotube/polymer interfaces based on the van der Waals force
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DOI：
10.1016/j.jmps.2006.04.009
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发表时间：
2006-11-01
影响因子：
5.3
通讯作者：
Liu, B.
中科院分区：
文献类型：
--
作者：
Jiang, L. Y.;Huang, Y.;Liu, B.
我们已经建立了碳纳米管（CNT）和聚合物之间的界面，没有很好地结合，其特征在于货车德瓦尔斯力的内聚定律。根据碳纳米管的面密度和聚合物的体积密度以及货车德瓦尔斯力中的参数给出了拉伸内聚强度和内聚能。对于无限大聚合物中的碳纳米管，剪切内聚应力为零，拉伸内聚应力仅取决于开口位移。对于有限聚合物基质中的CNT，拉伸内聚应力保持相同，但剪切内聚应力取决于打开位移和滑动位移，即，拉伸/剪切耦合。内聚定律的简单解析表达式对于研究碳纳米管与聚合物之间的相互作用，例如碳纳米管增强复合材料中的相互作用是有用的。研究了聚合物表面粗糙度对聚合物内聚规律的影响。(c)2006爱思唯尔有限公司保留所有权利。
We have established the cohesive law for interfaces between a carbon nanotube (CNT) and polymer that are not well bonded and are characterized by the van der Waals force. The tensile cohesive strength and cohesive energy are given in terms of the area density of carbon nanotube and volume density of polymer, as well as the parameters in the van der Waals force. For a CNT in an infinite polymer, the shear cohesive stress vanishes, and the tensile cohesive stress depends only on the opening displacement. For a CNT in a finite polymer matrix, the tensile cohesive stress remains the same, but the shear cohesive stress depends on both opening and sliding displacements, i.e., the tension/shear coupling. The simple, analytical expressions of the cohesive law are useful to study the interaction between CNT and polymer, such as in CNT-reinforced composites. The effect of polymer surface roughness on the cohesive law is also studied. (c) 2006 Elsevier Ltd. All rights reserved.