Effect of carbon nanotubes on mechanical and electrical properties of polyimide/carbon nanotubes nanocomposites
Effect of carbon nanotubes on mechanical and electrical properties of polyimide/carbon nanotubes nanocomposites
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DOI：
10.1016/j.eurpolymj.2007.06.025
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发表时间：
2007-09-01
影响因子：
6
通讯作者：
Sahoo, Nanda Gopal
中科院分区：
文献类型：
--
作者：
So, Hyang Hwa;Cho, Jae Whan;Sahoo, Nanda Gopal
以4.4′-氧化二苯胺、碳纳米管和焦二酸酐为原料，经浇铸、蒸发和热亚酰化反应，原位聚合合成了多壁碳纳米管增强聚酰亚胺纳米复合材料。通过扫描电子显微镜和原子力显微镜观察，在聚酰亚胺基体中获得了均匀分散的化学修饰MWNTs。由于聚合物基体与纳米管之间存在强烈的界面相互作用，改性MWNTs的掺入提高了聚酰亚胺的力学性能。所得聚酰亚胺/MWNTs纳米复合材料具有导电性，当MWNTs含量为3 wt%时，其导电性显著增强，这有利于许多实际应用。(C) 2007 Elsevier Ltd.版权所有。
Multi-walled carbon nanotubes (MWNTs) reinforced polyimide nanocomposites were synthesized by in situ polymerization using 4.4'-oxydianilline, MWNTs, and pyromellitic dianhydride followed by casting, evaporation and thermal imidization. A homogeneous dispersion of chemically modified MWNTs was achieved in polyimide matrix as evidenced by scanning electron microscopy and atomic force microscopy. The incorporation of the modified MWNTs enhanced the mechanical properties of the polyimide due to the presence of strong interfacial interaction between the polymer matrix and the nanotubes in polymer composites. The resultant polyimide/MWNTs nanocomposites were electrically conductive with significant conductivity enhancement at 3 wt% MWNTs, which is favorable for many practical uses. (C) 2007 Elsevier Ltd. All rights reserved.