Issue 21, 2011
From the journal:

Journal of Materials Chemistry

Polypropylene nanocomposites based on C60-decorated carbon nanotubes: thermal properties, flammability, and mechanical properties

Pingan Song,ac   Liping Zhao,ab   Zhenhu Caoab  and  Zhengping Fang*ab  

* Corresponding authors

a Laboratory of Polymer Materials and Engineering, Ningbo Institute of Technology, Zhejiang University, Ningbo, P. R. China
E-mail: zpfang@zju.edu.cn

b MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Institute of Polymer Composites, Zhejiang University, Hangzhou, P. R. China

c College of Engineering, Zhejiang Agriculture & Forestry University, Lin'an, P. R. China

Abstract

In the present study, the effects of covalently functionalized carbon nanotubes (CNTs) decorated with C60 (abbr. C60-d-CNT) on thermal, flame retardancy and mechanical properties of polypropylene (PP) are investigated. Compared with pristine CNTs, the C60-d-CNT is more easily dispersed in the PP matrix through reactive compatibilization. With the incorporation of C60-d-CNT, thermal oxidation degradation of PP is considerably delayed. Compared to PP, at 1.0 wt% loading of C60-d-CNT, the initial degradation temperature (T5) and maximum weight loss temperature (Tmax) in air are enhanced by 68 °C and 87 °C, respectively. Furthermore, incorporating 1.0 wt% C60-d-CNT can remarkably reduce the peak heat release rate (PHRR) by 71% relative to that of PP, and slow down the combustion process to some extent. The free-radical trapping effect of C60 and the CNTs network are responsible for the improved thermal and flame retardancy properties. Meanwhile, addition of C60-d-CNT also causes enhanced mechanical properties of PP nanocomposites to a certain degree.

Graphical abstract: Polypropylene nanocomposites based on C60-decorated carbon nanotubes: thermal properties, flammability, and mechanical properties

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Article information

DOI
https://doi.org/10.1039/C1JM10395D
Article type
Paper
Submitted
25 Jan 2011
Accepted
14 Mar 2011
First published
08 Apr 2011

J. Mater. Chem., 2011,21, 7782-7788

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Polypropylene nanocomposites based on C60-decorated carbon nanotubes: thermal properties, flammability, and mechanical properties

P. Song, L. Zhao, Z. Cao and Z. Fang, J. Mater. Chem., 2011, 21, 7782 DOI: 10.1039/C1JM10395D

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