Electrical and rheological characteristics of poly(vinyl acetate)/multi-walled carbon nanotube nanocomposites
Electrical and rheological characteristics of poly(vinyl acetate)/multi-walled carbon nanotube nanocomposites
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DOI：
10.1016/j.diamond.2006.11.075
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发表时间：
2007-04-01
影响因子：
4.1
通讯作者：
Choi, H. J.
中科院分区：
文献类型：
--
作者：
Choi, C. S.;Park, B. J.;Choi, H. J.
针对碳纳米管（CNT）在聚合物基体中的良好分散性，研究了聚醋酸乙烯酯（PVAc）/多壁碳纳米管（MWNT）纳米复合材料的形态结构、流变性能和导电性能。使用电阻计测试了PVAc/MWNT纳米复合材料的电性能。观察到少量的MWNT显著降低纳米复合材料的电阻率。用透射电子显微镜对纳米复合材料的内部结构进行了表征。采用拉曼光谱研究了复合材料中碳纳米管的分子运动。此外，使用旋转流变仪测量了纳米复合材料的流变性能，观察到储能（G '）和损耗模量（G''）随振荡剪切模式下频率的变化而增加。(c)2006 Elsevier B. V.保留所有权利。
Focusing on good dispersion of carbon nanotube (CNT) in the polymeric matrix, morphological and theological properties as well as electrical conductivity of poly(vinyl acetate) (PVAc)/multi-walled carbon nanotube (MWNT) nanocomposites were investigated. Electrical properties of the PVAc/MWNT nanocomposites were examined using a resistometer. Small amount of MWNT was observed to remarkably decrease resistivity of the nanocomposites. Internal structure of the nanocomposite materials was characterized by transmission electron microscope. Raman spectroscopy was adopted to investigate molecular motion of CNT in the composites. Moreover, theological properties of the nanocomposites were measured using a rotational rheometer, observing increased storage (G') and loss moduli (G '') as a function of frequency in an oscillatory shear mode. (c) 2006 Elsevier B.V. All rights reserved.