Super-Toughness Carbon Nanotube Yarns by Bio-Inspired Nano-Coiling Engineering.

ABSTRACT: Lightweight structural materials are commonly used as effective fillers for advanced composites with high toughness. This study focused on enhancing the toughness of direct-spun carbon nanotube yarns (CNTYs) by controlling the micro-textural structure using a water-gap-based direct spinning. Drawing inspiration from the structural features of natural spider silk fibroin, characterized by an α-helix in the amorphous region and β-sheet in the crystalline region, multiscale bundles within CNTYs are reorganized into a unique nano-coil-like structure. This nano-coiled structure facilitated the efficient dissipation of external mechanical loads through densification with the rearrangement of multiscale bundles, improving specific strength and strain. The resulting CNTYs exhibited exceptional mec

SUBMITTER: Cho YS 

PROVIDER: S-EPMC11220680 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature