聚氨酯
碳纳米管
纳米复合材料
导电体
材料科学
弹性体
电导率
数码产品
纳米技术
导电聚合物
复合材料
聚合物
物理化学
化学
作者
Songmin Shang,Wei Zeng,Xiaoming Tao
摘要
Stretchable conductive polymers have aroused extensive interest in research recently due to their hi-tech applications in the fields of novel electronics, particularly for flexible electronic displays, smart textiles, medical electronics, sensors and actuators. In this study, we describe a novel elastic conductive nanocomposite made with multiwall carbon nanotubes (MWNTs) and polyurethane (PU). With the aid of an ionic liquid and under the condition of uniaxial tension, the MWNTs can form well-developed conducting networks in the PU matrix. The developed nanocomposite inherited advantageous properties from its constituents, namely the high conductivity from MWNTs, and the high elastomeric mechanical properties from the PU. Moreover, the stretchable conductive nanocomposite can be uniaxially stretched up to 100% without significant variation in electrical conductivity. The measurement of temperature dependent conductivity indicates that a 3D hopping mechanism dominates the conductivity of MWNTs.
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