作者：Jinrui Huang, Yutian Zhu, Lina Xu, Jianwen Chen, Wei Jiang, Xiaoan Nie
关键字：聚合物基复合材料, 热导率, 界面, 石墨烯, 共连续共混, 热逾渗阈值
论文来源：期刊
具体来源：Composites Science and Technology, 2016, 129, 160-165
发表时间：2016年

摘要：通过聚合物链在石墨烯表面的吸附-脱附，将石墨烯捕获在聚ε-己内酯（PCL）/聚乳酸（PLA）共混物的界面处。由于石墨烯片被控制在聚合物共混物界面，所得复合材料表现出非常高的热导率。在石墨烯含量为0.53 vol%且形成良好共连续结构时，复合材料的导热系数比纯PCL/PLA共连续共混物高近4倍。此外，由于大部分石墨烯片选择性分布在共连续共混物的界面，该共混物实现了迄今为止最低的热逾渗阈值（0.11 vol%）。

Abstract：Trapping graphene at the interface of a poly(ε-caprolactone) (PCL)/poly(lactic acid) (PLA) blend is achieved through the adsorption-desorption of polymer chains on the graphene surface. The resulting composite exhibits remarkably high thermal conductivity due to the graphene sheets being controlled at the interface of the polymer blend. At 0.53 vol%, when a good co-continuous structure is formed, the thermal conductivity of the graphene composite is nearly 4 times higher than that of the pure PCL/PLA blend with co-continuous structure. Moreover, the blend achieves an extremely low thermal percolation threshold (0.11 vol%), the lowest to date, because most of the graphene sheets are selectively located at the interface of the blend with co-continuous structure.

论文链接：https://doi.org/10.1016/j.compscitech.2016.04.029