Stable dispersion of single wall carbon nanotubes in polyimide: the role of noncovalent interactions
Stable dispersion of single wall carbon nanotubes in polyimide: the role of noncovalent interactions
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DOI：
10.1016/j.cplett.2004.04.096
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发表时间：
2004-06-21
影响因子：
2.8
通讯作者：
Harrison, JS
中科院分区：
文献类型：
--
作者：
Wise, KE;Park, C;Harrison, JS
单壁碳纳米管（SWNTs）分散在腈功能化聚酰亚胺基体中，所得复合材料在纳米管的再聚集方面表现出优异的稳定性。这与结构相似的聚酰亚胺的行为形成对比，在聚酰亚胺中，分散只在短时间内稳定。观察到某些特征FTIR和拉曼峰的位移，表明纳米管与聚合物基体之间存在电荷转移相互作用。提出了一个简单的电荷转移稳定模型，并与实验结果相吻合。(C) 2004 Elsevier B.V.版权所有
Single wall carbon nanotubes (SWNTs) have been dispersed in a nitrile functionalized polyimide matrix and the resulting composite shows excellent stability with respect to reaggregation of the nanotubes. This contrasts with the behaviour of structurally similar polyimides in which the dispersion is only stable for short periods of time. Shifts in certain characteristic FTIR and Raman peaks which indicate a charge transfer interaction between the nanotubes and polymer matrix are observed. A simple model for charge transfer stabilization is presented and shown to be consistent with the experimental observations. (C) 2004 Elsevier B.V. All rights reserved.