期刊
COMPOSITES PART B-ENGINEERING
卷 42, 期 6, 页码 1554-1561出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2011.04.013
关键词
Carbon nanotube; Polymer-matrix composites (PMCs); Mechanical properties; Rheological properties
资金
- King Fahd University of petroleum & Minerals (KFUPM) as part of the National Science, Technology and Innovation Plan (NSTIP) [08-NAN91-04]
In this work, multiwall carbon nanotubes (CNT) were functionalized by acid treatment and characterized using Fourier Transform Infrared Spectroscopy (FTIR) and thermogravimetric analysis (TGA). Polystyrene/CNT composites of both the untreated and acid treated carbon nanotubes were prepared by thermal bulk polymerization without any initiator at different loadings of CNT. The tensile tests showed that the addition of 0.5 wt.% of acid treated CNT results in 22% increase in Young's modulus. The DSC measurements showed a decrease in glass transition temperature (T(g)) of PS in the composites. The rheological studies at 190 degrees C showed that the addition of untreated CNT increases the viscoelastic behavior of the PS matrix, while the acid treated CNT acts as plasticizer. Thermogravimetric analysis indicated that the incorporation of CNT into PS enhanced the thermal properties of the matrix polymer. (C) 2011 Elsevier Ltd. All rights reserved.
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