Authors: Golestan Salimbeygi Komeil Nasouri Ahmad Mousavi Shoushtari
Publish Date: 2014/05/09
Volume: 15, Issue: 3, Pages: 583-588
Abstract
Poly vinyl alcohol PVA/multi walled carbon nanotubes MWNT nanocomposite films were fabricated and their microwave absorption behavior were evaluated using vector network analyzer in the frequency range of 8–12 GHz Xband The uniform stable dispersion and well oriented MWNT within the PVA matrix were achieved through using sodium dodecyl sulfate SDS as dispersing agent The surface morphology of the PVA/SDS/MWNT films was examined by scanning electron microscope SEM The SEM analysis of the film samples revealed the uniform appearance in the whole surfaces of the fabricated composite films However some roughness on the surface was observed due to the presence of MWNT in the film structure The PVA/SDS/MWNT films show significant increase in microwave absorption which is improved by increasing the MWNT content The PVA/SDS/MWNT nanocomposite film sample with MWNT loading of 10 wt showed the maximum and the relatively high microwave absorption of 2800 dB at the frequency of 86 GHz
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