期刊
ACS NANO
卷 14, 期 5, 页码 5570-5580出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b09873
关键词
inorganic nanotubes; composites; self-healing; polymer fibers; evaporation induced self-assembly
类别
资金
- Engineering and Physical Sciences Research Council [EP/I02946X/1]
- University of Bristol
- France-BioImaging grant [ANR-10-INBS-04-01]
- Labex Saclay Plant Science grant [ANR-11-IDEX-0003-02]
- EPSRC [EP/I02946X/1] Funding Source: UKRI
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据