Volume 24, Issue 4 pp. 563-568
Full Paper

Covalent Functionalization of Multiwalled Carbon Nanotubes with Poly(acrylic acid)

Yan-Xin Liu

Yan-Xin Liu

The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China

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Zhong-Jie Du

Zhong-Jie Du

The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China

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Yan Li

Yan Li

The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China

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Chen Zhang

Chen Zhang

The Key Laboratory of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China

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Hang-Quan Li

Hang-Quan Li

Project supported by the National Natural Science Foundation of China (No. 020374006).

Tel.: 0086-10-64444899; Fax: 0086-10-64428804

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First published: 05 April 2006
Citations: 25

Project supported by the National Natural Science Foundation of China (No. 020374006).

Tel.: 0086-10-64444899; Fax: 0086-10-64428804

Abstract

Covalent functionalization of multiwalled carbon nanotubes (MWNT) with poly(acrylic acid) has been successfully achieved via grafting of poly(acryloyl chloride) on nanotube surface by esterification reaction of acyl chloride-bound polymer with hydroxyl functional groups present on acid-oxidized MWNT and hydrolysis of polymer attached to nanotubes. Polymer-functionalized MWNT could possess remarkably high solubility in water, and their aqueous solution was very stable without any observable black deposit for a long time. Characterizations of such functionalized MWNT samples using Fourier transform infrared spectrometer, transmission electron microscopy and nuclear magnetic resonance techniques indicated that poly(acrylic acid) was covalently attached to the surface of MWNT.

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