Preparations and properties of maleic acid and maleic anhydride functionalized multiwall carbon nanotube/poly(urea urethane) nanocomposites

被引：43
|
作者：
Wu, Han-Lang
Wang, Chung-Hao
Ma, Chen-Chi M. [1 ]
Chiu, Yie-Chan
Chiang, Meng-Tan
Chiang, Chin-Lung
机构：
[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30043, Taiwan
[2] Chung Shan Inst Sci & Technol, Chem Syst Res Div, Lungtan, Taiwan
[3] Hung Kung Univ, Dept Ind Safety & Hlth, Shalu 433, Taiwan
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2007年 / 67卷 / 09期
关键词：
carbon nanotube; poly(urea urethane); molecular mobility; EMI; scanning electron microscopy (SEM); ANGLE NEUTRON-SCATTERING; MECHANICAL-PROPERTIES; NANOTUBE NANOCOMPOSITES; COMPOSITES; BEHAVIOR;
D O I：
10.1016/j.compscitech.2006.10.028
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
The functionalized multiwall carbon nanotubes (MWNTs) have been prepared by free radical reaction with maleic acid and maleic anhydride. The functionalized MWNT was further blended with poly(dimethylsiloxane) (PDMS) based Poly(urea-urethane) (PUU). Both maleic acid modified MWNT (Maa-g-MWNT) and maleic anhydride modified MWNT (Mah-g-MWNT) showed enhanced dispersion compared with that of pristine MWNT and PUU. The content of maleic acid or maleic anhydride in modified MWNT was quantitatively characterized by TGA. The ratio of disorder band (D-band) to graphite band (G-band) of MWNT was investigated by Raman spectroscopy. Furthermore, the morphology of MWNT/PUU nanocomposites was studied by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The mechanical property, molecular mobility, and electromagnetic shielding effectiveness (EMI) of MWNT/PUU nanocomposites were discussed in this study. For MWNT/PUU nanocomposites containing 5 phr functionalized MWNT, the maximum microwave absorption was - 19.2 dB for Maa-g-MWNT/PUU nanocomposites and was -22 dB for Mah-gMWNT/PUU nanocomposites. (C) 2006 Published by Elsevier Ltd.
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收藏
页码：1854 / 1860
页数：7
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