Abstract
Fibers with high toughness and high strength are desirable, though these two characteristics are mutually exclusive. In this study, a tough, strong fiber with an asymmetric structure was fabricated on a low-energy surface by cross-linking, stretching and water-inducing methods using TEMPO-oxidized nanocellulose (TOCN)/alginate/borax/polyvinyl alcohol (PVA). The obtained fiber exhibited higher tensile strength (≈534.1 MPa, which is over 5 times higher than that of the prepared PVA fiber) and super toughness (≈142.8 MJ/m³, which is higher than that described in previous reports). Importantly, this fiber also showed environmental responsiveness to humidity changes (the water-driven ability) because of its asymmetric structure.
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