Effect of functionalization on the thermo-mechanical and electrical behavior of multi-wall carbon nanotube/epoxy composites

被引：227
作者：
Guadagno, L. [1 ,4 ]
De Vivo, B. [2 ,4 ]
Di Bartolomeo, A. [3 ,4 ]
Lamberti, P. [2 ,4 ]
Sorrentino, A. [1 ]
Tucci, V. [2 ,4 ]
Vertuccio, L. [1 ,4 ]
Vittoria, V. [1 ,4 ]
机构：
[1] Univ Salerno, Dipartimento Ingn Chim & Alimentare, I-84084 Fisciano, SA, Italy
[2] Univ Salerno, Dipartimento Ingn Informaz & Ingn Elettr, I-84084 Fisciano, SA, Italy
[3] Univ Salerno, Dipartimento Fis E Caianiello, I-84081 Baronissi, SA, Italy
[4] Univ Salerno, Res Ctr NANOMAt & NanoTEchnol, I-84081 Baronissi, SA, Italy
来源：
CARBON | 2011年 / 49卷 / 06期
关键词：
EPOXY COMPOSITES; MECHANICAL-PROPERTIES; PHYSICAL-PROPERTIES; RAMAN-SPECTROSCOPY; CONDUCTIVITY; DISPERSION; MATRIX; NANOCOMPOSITES; REINFORCEMENT; THRESHOLD;
D O I：
10.1016/j.carbon.2011.01.017
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：
The effect of the functionalization of multi-wall carbon nanotubes (MWCNTs) on the structure, the mechanical and electrical properties of composites was investigated. Samples based on epoxy resin with different weight percentage of MWCNTs or COOH-functionalized carbon nanotubes (MWCNT-COOH) were prepared and characterized. Dynamic-mechanical thermal analysis shows that the storage modulus increases with the addition of MWCNTs, whereas a constant value or even a weak reduction was observed for functionalized nanotubes. Two phases were suggested in the composites with MWCNT-COOH, both by dynamic-mechanical properties and by water transport. Chemical functionalization of MWCNTs increases the compatibility with the epoxy matrix due to the formation of an interface with stronger interconnections. This, in turn, causes a significant decrease in the electrical conductivity of this type of composite with respect to the untreated MWCNTs which can be explained in terms of tunnelling resistance between interacting nanotubes. (C) 2011 Elsevier Ltd. All rights reserved.
引用
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页码：1919 / 1930
页数：12
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