Electrical and mechanical percolation in graphene-latex nanocomposites
Electrical and mechanical percolation in graphene-latex nanocomposites
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DOI：
10.1016/j.polymer.2014.08.025
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发表时间：
2014-09
期刊：
影响因子：
4.6
通讯作者：
Amélie Noël;J. Faucheu;J. Chenal;J. Viricelle;E. Bourgeat‐Lami
中科院分区：
文献类型：
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作者：
Amélie Noël;J. Faucheu;J. Chenal;J. Viricelle;E. Bourgeat‐Lami
基于少层石墨烯的导电复合材料是目前研究的热点。在这项工作中，乳胶基复合材料的生产导致了特定的细胞形态。高导电性石墨烯基复合材料是通过无溶剂工艺生产的。使用渗透方法成功地描述了机械和电导率行为，证实了在材料中有效分布的三维填料网络的存在。导电填料与乳胶纳米球之间的纵横比对研究的影响。实验结果表明，复合材料细胞尺寸的调整会影响渗透阈值、可达到的最大电导率和增强。这些实验结果与基于统计渗流理论的现象学模型相一致。
Conductive composites based on few layer graphene are of primary interests. In this work latex based composites were produced leading to a specific cellular morphology. Highly conductive graphene-based composite materials have been produced through a solvent-free procedure. Both the mechanical and conductivity behaviors were successfully described using a percolation approach that confirms the presence of a three dimensional filler network efficiently spread across the material. The influence of the aspect ratio between the conductive filler and the latex nanosphere drove the study. It was demonstrated experimentally that the tuning of the cell dimensions of the composite morphology influences the percolation threshold and the reachable maximum conductivity and reinforcement. These experimental results are consistent with phenomenological models based on the statistical percolation theory.