The role of carbon and tungsten disulphide nanotubes in the fracture of polymer-interlayered ceramic composites: a microscopy study
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Multi-walled carbon nanotubes (MWNT) and tungsten disulphide nanotubes (WS2-INT) have been widely used to improve the strength and toughness of composite materials. The mechanisms of such improvements are extensively studied, but it is not often clear what prompts a specific reinforcement mechanism to work. In this work we prepared two similar systems reinforced with different nanofillers (MWNT and WS2-INT). Using in situ optical microscopy and post-fracture electron microscopy, we established that using different nanofillers results in a different type of fracture and a different reinforcement mechanism. When compared to non-reinforced composites both systems showed significant improvements in both strength and fracture toughness.
This research was supported by THE ISRAEL SCIENCE FOUNDATION (Grant No. _727/14), and by the INNI Focal Technology Area program “Inorganic nanotubes (INT): from nanomechanics to improved nanocomposites”. In addition, we acknowledge support from the G. M. J. Schmidt Minerva Centre of Supramolecular Architectures and the generosity of the Harold Perlman family. We thank the group of Prof. Reshef Tenne for providing tungsten disulphide nanotubes. H.D.Wagner is the recipient of the Livio Norzi Professorial Chair in Materials Science.
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Conflict of interest
The authors have no conflict of interest to declare.
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