Electromagnetic interference shielding effects of polyaniline-coated multi-wall carbon nanotubes/maghemite nanocomposites

被引：29
作者：
Yun, Jumi [1 ]
Kim, Hyung-Il [1 ]
机构：
[1] Chungnam Natl Univ, Dept Fine Chem Engn & Appl Chem, BK21 E2M, Taejon 305764, South Korea
来源：
POLYMER BULLETIN | 2012年 / 68卷 / 02期
关键词：
Electromagnetic interference shielding; Polyaniline; Carbon nanotubes; Maghemite; Nanocomposite; THIN-FILMS; COMPOSITES; NANOTUBES; CONDUCTIVITY; FABRICATION; EFFICIENCY; ACID;
D O I：
10.1007/s00289-011-0651-4
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Highly conductive nanocomposites were prepared by in situ polymerization of polyaniline (PANi) and multi-walled carbon nanotubes (MWCNTs) as electromagnetic interference shielding materials. gamma-Fe2O3 nanoparticles were also incorporated in the nanocomposites to improve the ferromagnetic properties. SEM and TEM images showed the uniformly coated PANi on the surface of MWCNTs and gamma-Fe2O3. XRD peaks also confirmed the presence of MWCNT and gamma-Fe2O3 in the nanocomposites. The nanocomposites showed significant improvement in permittivity, permeability, and electromagnetic interference shielding efficiency due to the conductive effect of MWCNTs and the magnetic effect of gamma-Fe2O3. The electromagnetic interference shielding efficiency of nanocomposites increased up to 34.1 dB due to the synergetic effect of reflection and absorption of electromagnetic interference by MWCNTs and gamma-Fe2O3 additives.
引用
收藏
页码：561 / 573
页数：13
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