Anisotropic nonlinear mechanical behavior in carbon nanotubes/poly(1,4-cis-isoprene) nanocomposites
| Autor: | Stefano Pandini, Silvia Agnelli, Sara Musto, Maurizio Galimberti, Andrea Serafini |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Nanocomposite
Materials science Polymers and Plastics Polymer nanocomposite Organic Chemistry Isotropy Compression molding Mechanical properties of carbon nanotubes 02 engineering and technology Carbon nanotube 010402 general chemistry 021001 nanoscience & nanotechnology Orthotropic material 01 natural sciences 0104 chemical sciences law.invention Inorganic Chemistry Condensed Matter::Materials Science Electron diffraction law Materials Chemistry Composite material 0210 nano-technology |
| Popis: | This work shows the remarkable anisotropic nonlinear mechanical behavior of nanocomposites based on carbon nanotubes and poly(1,4-cis-isoprene), prepared by mechanical mixing, calendering, and compression molding. The dynamic-mechanical moduli were measured as a function of the applied strain and along specific directions. The specimens revealed, at all filler contents, an orthotropic and transversally isotropic response, which means properties very similar inside the sheet plane and very different from those in the orthogonal direction. This response was correlated to the material structure by means of bright field transmission electron microscopy analysis, coupled with electron diffraction measurements, so to observe the nanofiller structuring through the specimen thickness. Preferential orientation of nanotubes and alternate areas containing large or low CNT amount were revealed. This work shows that energy dissipation is not isotropic in CNT-filled polymer nanocomposites and aims at giving a contribut... |
| Databáze: | OpenAIRE |
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