Morphology and mechanical and electrical properties of oriented PVA-VGCF and PVA-MWNT composites
Morphology and mechanical and electrical properties of oriented PVA-VGCF and PVA-MWNT composites
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DOI：
10.1016/j.polymer.2005.12.032
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发表时间：
2006-02-08
期刊：
影响因子：
4.6
通讯作者：
Matsuo, M
中科院分区：
文献类型：
--
作者：
Bin, YZ;Mine, M;Matsuo, M
以二甲基亚砜（DMSO）和水（H2O）为原料，采用凝胶/结晶法制备了聚乙烯醇（PVA）/气相生长碳纤维（VGCFs）/多壁碳纳米管（MWNTs）复合材料。复合膜被单轴拉伸至5-10倍。通过引入VGCF和MWNTs以及填料的取向，PVA复合材料的力学性能得到了显着改善。与VGCF相比，MWNTs的网络结构更能有效地提高复合材料的导电性。含有5重量% MWNT的PVA/MWNT复合材料的电导率的变化是独立的拉伸比高达8倍，表明没有中断的网络形成。一定的高水平的过滤器内容被证明是必要的，以促进在定向复合材料的机械和电气性能。(c)2005爱思唯尔有限公司保留所有权利。
The composites poly(vinyl alcohol) (PVA) and vapor growth carbon fiber (VGCFs) and multi wall carbon nanotubes (MWNTs) were prepared by gelation/crystallization from the mixture of dimethyl sulfoxide (DMSO) and water (H2O). The composite films were elongated to 5-10-fold uniaxially. The mechanical properties of PVA composites were improved significantly by introduction of VGCFs and MWNTs and also by the orientation of fillers. Compared to VGCFs, MWNTs was more effective to improve the electric conductivity of the composites because of its network structure. The change in the electrical conductivity for the PVA/MWNT composites containing 5 wt% MWNT was independent of the draw ratio up to eight-fold indicating no disruption of the network formation. A certain high level of filter content was proved to be necessary for the promotion of both mechanical and electrical properties in oriented composite. (c) 2005 Elsevier Ltd. All rights reserved.