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Ferroferric Oxide/Multi-walled Carbon Nanotube vs Polyaniline/Ferroferric Oxide/Multi-walled Carbon Nanotube Multi-heterostructures for Highly Effective Microwave Absorption.
MedLine Citation:
PMID:  23148554     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Light-weight nanocomposites filled with carbon nanotubes (CNTs) are developed for their significant potentials in electromagnetic shielding and attenuation for wide applications in electronics, communication devices and specific parts in aircrafts and vehicles. Specifically, the introduction of a second phase into/onto CNTs for achieving CNT-based heterostructures has been widely pursued due to the enhancement in either dielectric loss or magnetic loss. In this work, ferroferric oxide (Fe3O4) was selected as the phase in multi-walled carbon nanotube (MWCNT)-based composites for enhancing magnetic properties to obtain improved electromagnetic attenuation. A direct comparison between the two-phase heterostructures (Fe3O4/MWCNTs) and polyaniline (PANI) coated Fe3O4/MWCNTs, namely three-phase heterostructures (PANI/Fe3O4/MWCNTs), was made to investigate the interface influences of Fe3O4 and PANI on the complex permittivity and permeability separately. Compared to PANI/Fe3O4/MWCNTs, Fe3O4/MWCNTs exhibited enhanced magnetic properties coupled with increased dielectric properties. Interfaces between MWCNTs and heterostructures were found to play a role in the corresponding properties. The evaluation of microwave absorption of their wax composites was carried out, and the comparison between Fe3O4/MWCNTs and PANI/Fe3O4/MWCNTs with respect to highly efficient microwave absorption and effective absorption bandwidth was discussed.
Authors:
Mao-Sheng Cao; Jian Yang; Wei-Li Song; De-Qing Zhang; Bo Wen; Hai-Bo Jin; Zhi-Ling Hou; Jie Yuan
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-13
Journal Detail:
Title:  ACS applied materials & interfaces     Volume:  -     ISSN:  1944-8252     ISO Abbreviation:  ACS Appl Mater Interfaces     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-14     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101504991     Medline TA:  ACS Appl Mater Interfaces     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
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