Unknown

Dataset Information

0

Inorganic Nanotube Mesophases Enable Strong Self-Healing Fibers.


ABSTRACT: The assembly of one-dimensional nanomaterials into macroscopic fibers can improve mechanical as well as multifunctional performance. Double-walled aluminogermanate imogolite nanotubes are geo-inspired analogues of carbon nanotubes, synthesized at low temperature, with complementary properties. Here, continuous imogolite-based fibers are wet-spun within a poly(vinyl alcohol) matrix. The lyotropic liquid crystallinity of the system produces highly aligned fibers with tensile stiffness and strength up to 24.1 GPa (14.1 N tex-1) and 0.8 GPa (0.46 N tex-1), respectively. Significant enhancements over the pure polymer control are quantitatively attributed to both matrix refinement and direct nanoscale reinforcement, by fitting an analytical model. Most intriguingly, imogolite-based fibers show a high degree of healability via evaporation-induced self-assembly, recovering up to 44% and 19% of the original fiber tensile stiffness and strength, respectively. This recovery at high absolute strength highlights a general strategy for the development of high-performance healable fibers relevant to composite structures and other applications.

PROVIDER: S-EPMC7304920 | BioStudies |

REPOSITORIES: biostudies

Similar Datasets

| S-EPMC8153543 | BioStudies
| S-EPMC6432024 | BioStudies
| S-EPMC5732198 | BioStudies
| S-EPMC1334634 | BioStudies
| S-EPMC8789815 | BioStudies
| S-EPMC5573399 | BioStudies
| S-EPMC6620359 | BioStudies
| S-EPMC5959293 | BioStudies
2018-01-01 | S-EPMC6117685 | BioStudies
| S-EPMC8777760 | BioStudies