Complex Permittivity of Polyaniline/Carbon Nanotube and Nanofibre Nanocomposites in the X-Band: PMMA Composites
- Authors
- Corporate Authors
- Defence R&D Canada - Atlantic, Dartmouth NS (CAN)
- Abstract
- Polymer composites incorporating polyaniline (PAni) and multiwalled carbon nanotubes (MWNTs) as conductive filler were synthesized and characterized using FT-IR spectroscopy, SEM, TEM, and dc conductivity measurements. The pure nanocomposite powders were significantly more conductive than PAni, MWNT, or CNFs alone. PAni, MWNT, CNFs, PAni-coated MWNT (PAni-MWNT), and PAni-coated CNF (PAni-CNF) nanocomposites were also incorporated as conductive filler into the insulating matrix, PMMA, to produce a rigid and conductive composite material with well-defined shape. The microwave properties of these composites were examined by determining the complex permittivity from transmission-reflection waveguide measurements in the X-band (8-12 GHz). PMMA composites containing PAni-MWNT or PAni-CNFs poorer, while PMMA composites containing PAni and MWNT mixed ex situ were better microwave absorbers than composites containing only PAni or MWNTs.
- Keywords
- Polyaniline;Permittivity;Carbon Nanotube;Carbon Nanofibre;Nanocomposite;Multiwalled nanotubes;X−band;polymethylmethacrylate;PMMA
- Report Number
- DRDC-ATLANTIC-TM-2004-124 — Technical Memorandum
- Date of publication
- 16 May 2005
- Number of Pages
- 58
- DSTKIM No
- CA026026
- CANDIS No
- 523783
- Format(s):
- Electronic Document(PDF)
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