Correlation between manufacturing processes and anisotropic magnetic and electromagnetic properties of carbon nanotube/polystyrene composites
| Autor: | Erkki Lähderanta, Pavel Geydt, O. V. Sedelnikova, Alexander V. Okotrub, A. A. Komlev, Tatiana L. Makarova, I. Zakharchuk, A.A. Zyrianova, Lyubov G. Bulusheva, V. I. Suslyaev, M. A. Kanygin |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nanotube
Materials science 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences Industrial and Manufacturing Engineering law.invention Condensed Matter::Materials Science chemistry.chemical_compound law Composite material Anisotropy Mechanical Engineering Condensed Matter::Mesoscopic Systems and Quantum Hall Effect 021001 nanoscience & nanotechnology 0104 chemical sciences Optical properties of carbon nanotubes Carbon nanotube metal matrix composites Magnetic anisotropy chemistry Mechanics of Materials Ceramics and Composites Diamagnetism Polystyrene 0210 nano-technology |
| Zdroj: | Composites Part B: Engineering |
| ISSN: | 1359-8368 |
| DOI: | 10.1016/j.compositesb.2016.01.040 |
| Popis: | We present an original, easy to implement, reliable method of non-destructive testing of the orientation of carbon nanotubes by magnetic moment measurements performed in three perpendicular directions of magnetic field. Multi-wall carbon nanotubes/polystyrene composites were prepared by stretching and forge-rolling methods with the same nanotube loading. Unusually strong diamagnetic anisotropy in the composites prepared by the stretching method was observed and attributed to an additional diamagnetic response from the polystyrene aromatic rings wrapping the nanotubes. Strong anisotropy of diamagnetic susceptibility of the composites with highly aligned nanotubes correlates with anisotropic electromagnetic response and with improved microwave absorption properties. Both magnetic anisotropy and microwave absorbance is considerably lower in the composites prepared by the forge-rolled method. The magnetic results correlate well with polarized Raman spectroscopy. The research findings contribute to a better understanding of nanotube-polymer interface, alignment mechanisms, and ultimately the optimal design and performance of functional nanotube - aromatic polymer nanocomposites. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect