Abstract The way how carbon nanotubes (CNTs) are assembled together determines the utilization efficiency of mechanical property in their macroscopic assembly materials. For one-dimensional (1D) assemblies, CNTs are often assembled under drawing and twisting into a fiber structure with a twist angle. In this study, an untwisted 1D assembly, CNT strip, is introduced, inside which the CNTs are not only aligned but also overall parallel to strip axis. Due to the shielding effect of the twisted fiber surface, the interior of CNT fiber is loosely packed, and the fiber is more stretchable and hard to become stiff. On the contrary, CNT strip with high straightness or undirectionality can utilize the CNT's mechanical property much more efficiently, as reflected by its higher strength and modulus. These insights can guide different applications of CNT fibers and strips in textile.

中文翻译：

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一维碳纳米管组件扭曲和未扭曲结构的比较

摘要 碳纳米管（CNTs）的组装方式决定了其宏观组装材料中力学性能的利用效率。对于一维 (1D) 组件，碳纳米管通常在拉伸和扭曲下组装成具有扭曲角的纤维结构。在这项研究中，引入了一种未扭曲的 1D 组件，即 CNT 条带，其中 CNT 不仅对齐而且总体上平行于条带轴。由于加捻纤维表面的屏蔽作用，CNT纤维内部堆积松散，纤维更具有拉伸性，不易变硬。相反，具有高直线度或无方向性的碳纳米管条可以更有效地利用碳纳米管的机械性能，这体现在其更高的强度和模量上。