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美国德雷塞尔大学与大连理工大学合作制备出一种新型导电聚合物纳米复合材料,其柔性能达到折叠程度,而强度足以支撑几倍于自身重量的物体。该材料有望用于改进电能储存、便携式电子设备及同轴电缆等的射频屏蔽等。上述成果是研究人员基于一类名为MXene的二维材料,通过插层方法,在MXene的各个层之间插入了多种液态化学物质(如聚乙烯醇PVA、聚二烯丙基二甲基氯化铵PDDA),其表面布满了各种官能团,进而改变了化学及物理性质。例如在表面羟基作用下,碳化钛MXene薄片与聚合物分子形成紧
Drexel University and Dalian University of Technology to prepare a new type of conductive polymer nanocomposites, the flexibility to achieve the degree of folding, and the strength enough to support several times their own weight of the object. The material is expected to be used to improve radio frequency shielding in electrical energy storage, portable electronic equipment and coaxial cables. The above result was based on a class of two-dimensional materials, called MXene, by intercalation of various liquid chemistries (such as polyvinyl alcohol PVA, polydiallyldimethyl Ammonium Chloride (PDDA), the surface covered with a variety of functional groups, which changed the chemical and physical properties. For example, under the action of surface hydroxyls, a titanium carbide MXene sheet forms a tight bond with the polymer molecules