Multifunctional Polymer-Based Graphene Foams with Buckled Structure and Negative Poisson's Ratio.
Multifunctional Polymer-Based Graphene Foams with Buckled Structure and Negative Poisson's Ratio.
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具有屈曲结构和负泊松比的多功能聚合物基石墨烯泡沫
DOI：
10.1038/srep32989
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发表时间：
2016-09-09
影响因子：
4.6
通讯作者：
Zhang Z
中科院分区：
文献类型：
--
作者：
Dai Z;Weng C;Liu L;Hou Y;Zhao X;Kuang J;Shi J;Wei Y;Lou J;Zhang Z
在这项研究中，我们报道了通过自下而上组装和简单的三轴屈曲结构设计相结合的聚合物基石墨烯泡沫。由此产生的聚合物基泡沫石墨烯不仅有效地转移了石墨烯的功能特性，而且由于存在屈曲结构而表现出新的负泊松比（NPR）行为。结果表明，引入屈曲结构后，材料的拉伸性能、韧性、柔韧性、吸能能力、疏水性、电导率、压阻灵敏度和抗裂性能均有提高。机械性能、多功能性能和不寻常的变形行为的结合将导致我们的聚合物基石墨烯泡沫在未来用于各种新颖的应用，如可拉伸电容器或导体、传感器和油水分离器等。
In this study, we report the polymer-based graphene foams through combination of bottom-up assembly and simple triaxially buckled structure design. The resulting polymer-based graphene foams not only effectively transfer the functional properties of graphene, but also exhibit novel negative Poisson’s ratio (NPR) behaviors due to the presence of buckled structure. Our results show that after the introduction of buckled structure, improvement in stretchability, toughness, flexibility, energy absorbing ability, hydrophobicity, conductivity, piezoresistive sensitivity and crack resistance could be achieved simultaneously. The combination of mechanical properties, multifunctional performance and unusual deformation behavior would lead to the use of our polymer-based graphene foams for a variety of novel applications in future such as stretchable capacitors or conductors, sensors and oil/water separators and so on.
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