Stable dispersion of single wall carbon nanotubes in polyimide: the role of noncovalent interactions

被引：153

作者：

Wise, KE ^{[1
]}

Park, C

Siochi, EJ

Harrison, JS

机构：

[1] Natl Inst Aerosp, Hampton, VA USA

[2] NASA, Langley Res Ctr, Adv Mat & Proc Branch, Hampton, VA 23665 USA

来源：

CHEMICAL PHYSICS LETTERS | 2004年 / 391卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2004.04.096

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

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页码：207 / 211

页数：5

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