Lightweight and flexible electromagnetic shielding materials were designed by selectively localizing multiwall carbon nanotubes (MWNTs) anchored magnetic nanoparticles in melt mixed co-continuous blends of polyvinylidene fluoride (PVDF) and poly(styrene-co-acrylonitrile) (SAN). In order to facilitate better dispersion, the MWNTs were modified using pyrenebutyric acid (PBA) via pi-pi stacking. While one of the two-targeted properties, i.e., high electrical conductivity, was achieved by PBA modified MWNTs, high magnetic loss was accomplished by introducing nickel (NF) or cobalt ferrites (CF). Moreover, the attenuation by absorption can be tuned either by using NF (58% absorption) or CF (64% absorption) in combination with PBA-MWNTs. More interestingly, when CF was anchored on to MWNTs via the pyrene derivative, the minimum reflection loss attained was -55 dB in the Ku band (12-18 GHz) frequency and with a large bandwidth. In addition, the EM waves were blocked mostly by absorption (70%). This study opens new avenues in designing flexible and lightweight microwave absorbers.
机构:
Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Bose, Suryasarathi
;
Bhattacharyya, Arup R.
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Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Bhattacharyya, Arup R.
;
Khare, Rupesh A.
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Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Khare, Rupesh A.
;
Kulkarni, Ajit R.
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Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Kulkarni, Ajit R.
;
Poetschke, Petra
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Leibaniz Inst Polymer Res Dresden, Dept Polymer React & Blends, D-01069 Dresden, GermanyIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
机构:
Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Bose, Suryasarathi
;
Bhattacharyya, Arup R.
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h-index: 0
机构:
Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Bhattacharyya, Arup R.
;
Khare, Rupesh A.
论文数: 0引用数: 0
h-index: 0
机构:
Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Khare, Rupesh A.
;
Kulkarni, Ajit R.
论文数: 0引用数: 0
h-index: 0
机构:
Indian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, IndiaIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India
Kulkarni, Ajit R.
;
Poetschke, Petra
论文数: 0引用数: 0
h-index: 0
机构:
Leibaniz Inst Polymer Res Dresden, Dept Polymer React & Blends, D-01069 Dresden, GermanyIndian Inst Technol, Dept Met Engn & Mat Sci, Bombay 400076, Maharashtra, India