A comparison of melt and solution mixing on the dispersion of carbon nanotubes in a poly(vinylidene fluoride) matrix
A comparison of melt and solution mixing on the dispersion of carbon nanotubes in a poly(vinylidene fluoride) matrix
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熔体和溶液混合对碳纳米管在聚偏二氟乙烯基体中分散的影响比较
DOI：
10.1016/j.compositesb.2011.09.007
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发表时间：
2012-04-01
影响因子：
13.1
通讯作者：
Yang, Ming-Bo
中科院分区：
文献类型：
--
作者：
Ke, Kai;Wang, Yu;Yang, Ming-Bo
采用熔融法和溶液共混法制备了多壁碳纳米管(MWCNT)/聚偏氟乙烯(PVDF)复合材料。用流变性评价了MWCNTs在PVDF中的分散状态，并用光学显微镜、扫描电子显微镜和透射电子显微镜图像进行了验证。研究发现，多壁碳纳米管的分散状态不仅与多壁碳纳米管的浓度有关，而且与混合方式有关。具体地说，在低浓度的MVVCNTs(小于5wt.%)下，溶液混合导致MWCNTs的分散性比熔融混合好得多，而在较高浓度时情况正好相反。探讨了MWCNTs在两种混合方式下的分散机理。(C)2011爱思唯尔有限公司。保留所有权利。
Multi-walled carbon nanotube (MWCNT)/poly(vinylidene fluoride) (PVDF) composites were prepared by two frequently-used approaches, melt and solution mixing. The dispersion state of MWCNTs in the PVDF matrix was evaluated by rheological properties and confirmed by optical microscope, scanning electron microscope and transmission electron microscope images. It was found that the dispersion state of MWCNTs was dependent not only on the concentration of MWCNTs but also the mixing method. Specifically, solution mixing led to a much better dispersion of MWCNTs than melt mixing at low concentrations of MVVCNTs (less than 5 wt.%), while the situation was reversed at higher concentrations. The dispersion mechanisms of MWCNTs for the two mixing methods were also discussed. (C) 2011 Elsevier Ltd. All rights reserved.