Zhou Tianzhu, Cao Can, Yuan Shixing, Wang Zhe, Zhu Qi, Zhang Hao, Yan Jia, Liu Fan, Xiong Ting, Cheng Qunfeng, Wei Lei
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
Adv Mater. 2023 Dec;35(51):e2305807. doi: 10.1002/adma.202305807. Epub 2023 Nov 12.
High-performance MXene fibers are always of significant interest for flexible textile-based devices. However, achieving high mechanical property and electrical conductivity remains challenging due to the uncontrolled loose microstructures of MXene (Ti C T and Ti CNT ) nanosheets. Herein, high-performance MXene fibers directly obtained through fluidics-assisted thermal drawing are demonstrated. Tablet interlocks are formed at the interface layer between the outer cyclic olefin copolymer and inner MXene nanosheets due to the thermal drawing induced stresses, resulting in thousands of meters long macroscopic compact MXene fibers with ultra-high tensile strength, toughness, and outstanding electrical conductivity. Further, large-scale woven textiles constructed by these fibers offer exceptional electromagnetic interference shielding performance with excellent durability and stability. Such an effective and sustainable approach can be applied to produce functional fibers for applications in both daily life and aerospace.
高性能的MXene纤维一直是基于柔性纺织品的设备所关注的重点。然而，由于MXene（Ti C T和Ti CNT）纳米片的微观结构松散且不受控制，实现高机械性能和导电性仍然具有挑战性。在此，展示了通过流体辅助热拉伸直接获得的高性能MXene纤维。由于热拉伸引起的应力，在外层环烯烃共聚物和内层MXene纳米片之间的界面层形成了片状互锁结构，从而得到了具有超高高拉伸强度、韧性和出色导电性的长达数千米的宏观致密MXene纤维。此外，由这些纤维构成的大规模机织纺织品具有卓越的电磁干扰屏蔽性能，且具有出色的耐久性和稳定性。这种有效且可持续的方法可用于生产适用于日常生活和航空航天领域的功能性纤维。
