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Short Poster Lecture

Bio-inspired hierarchical composite based on carbon nanotube fibers and study on the interphases

Monday (19.03.2018)
20:10 - 20:15
Part of:


Structures from nature are often hierarchical composites, in which nanosized fillers (fibers or platelets) are embedded in matrices. In this work, we present an unconventional multi-scale, i.e. nano-micro-macro, hierarchical composite based on the newly emerged carbon nanotube fibers (CNTFs), the structure of which is reminiscent of that of tendon. The interphase was controlled by applying different levels of densification treatments to the CNTFs prior to embedding in an epoxy matrix.[1] The results show strong effects of the solvents on the structure and chemistry of the CNTFs, and consequently on the interphase of the hierarchical composites. A continuously monitored fragmentation test showed that the apparent interfacial shear strength could be doubled by the treatment. We demonstrate that interphase between CNTF and epoxy can be controlled by polymer penetration, which will certainly affect the mechanical properties of the composite.

Speaker:
Dr. XiaoMeng Sui
Weizmann Institue of Science
Additional Authors:
  • Dr. Israel Greenfeld
    Weizmann Institute of Science
  • Dr. Hagai Cohen
    Weizmann Institute of Science
  • Prof. Dr. XiaoHua Zhang
    Suzhou Institute of Nano-Tech and Nano-Bionics
  • Prof. Dr. QingWen Li
    Suzhou Institute of Nano-Tech and Nano-Bionics
  • Prof. Dr. H.Daniel Wagner
    Weizmann Institute of Science

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