作者：Cui Mao, Jinrui Huang, Yutian Zhu, Wei Jiang, Qingxin Tang, Xiaojing Ma
关键字：石墨烯, 导电各向异性, 剪切诱导自组装, 聚合物共混, 平行条纹, 塑料薄膜
论文来源：期刊
具体来源：The Journal of Physical Chemistry Letters, 2013, 4(1), 43-47
发表时间：2013年

通过剪切诱导自组装，以聚丙烯/苯乙烯-乙烯-丁二烯-苯乙烯三嵌段共聚物/石墨烯共混物为体系，提出了一种简单高效的制备高各向异性导电塑料薄膜的方法。在剪切流诱导下，分散在聚合物基体中的石墨烯纳米片可自发组装成有序的平行条纹，使材料表现出显著的导电各向异性：沿石墨烯条纹平行方向的电阻率比垂直方向低近四个数量级。该研究为精确控制聚合物基体中功能纳米物体的有序排列提供了新方法，可推广到多种多功能各向异性材料的制备。

We present a simple but efficient route to prepare a highly anisotropic conductive plastic thin film from the polypropylene/(styrene-ethylene/butadiene-styrene) triblock copolymer/graphene blend via shear-induced self-assembly. Under shear-flow induction, graphene nanosheets dispersed in the polymer matrix spontaneously assemble into ordered parallel stripes, endowing the material with significantly conductive anisotropy. The electrical resistivity parallel to the graphene stripes is almost four orders of magnitude lower than that perpendicular to the stripes. This study provides a new method for the precise control of the organization of functional nano-objects in polymer matrix, which can be widely extended to the fabrication of other multifunctional anisotropic materials.

论文链接：https://doi.org/10.1021/jz301811b