Improving the dispersion and flexural strength of multiwalled carbon nanotubes-stiff epoxy composites through β-hydroxyester surface functionalization coupled with the anionic homopolymerization of the epoxy matrix

被引：47

作者：

Chen, Wei

Auad, Maria L. ^{[1
]}

Williams, Roberto J. J.

Nutt, Steven R.

机构：

[1] Univ So Calif, Dept Mat Sci, Gill Fdn Composites Ctr, Los Angeles, CA 90089 USA

[2] Univ Mar del Plata, Inst Mat Sci & Technol, IMTEMA, RA-7600 Mar Del Plata, Argentina

[3] Consejo Nacl Invest Cient & Tecn, Natl Res Council, RA-7600 Mar Del Plata, Argentina

来源：

EUROPEAN POLYMER JOURNAL | 2006年 / 42卷 / 10期

关键词：

multiwalled carbon nanotubes (MWCNTs); surface functionalization; epoxy matrix;

D O I：

10.1016/j.eurpolymj.2006.04.016

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];

摘要：

Multiwalled carbon nanotubes (MWNTs) were functionalized in a two-step acid-epoxy functionalization process, in which suitable surface condition and reactivity compatible with the DGEBA epoxy resin was introduced. The use of (4-dimetliylamino)-pyridine as an initiator for DGEBA homopolymerization produced covalent bonds between the functionalized MWNTs and the epoxy matrix through chain transfer reactions involving the secondary hydroxyls. This process yielded uniform MWNTs-stiff epoxy composites with significant enhancement in flexural strength without sacrificing the elastic modulus when compared to the neat resin. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：2765 / 2772

页数：8

共 19 条

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Covalent chemistry of single-wall carbon nanotubes [J].