Enhanced electromagnetic shielding behaviour of multilayer graphene anchored luminescent TiO2 in PPY matrix

被引：27
作者：
Gupta, Ankit [1 ,2 ]
Varshney, Swati [2 ]
Goyal, Abhishake [3 ]
Sambyal, Pradeep [1 ]
Gupta, Bipin Kumar [1 ]
Dhawan, S. K. [1 ]
机构：
[1] CSIR Natl Phys Lab, New Delhi 110012, India
[2] Delhi Inst Tool Engn, New Delhi 110020, India
[3] Delhi Technol Univ, New Delhi 110042, India
来源：
MATERIALS LETTERS | 2015年 / 158卷
关键词：
Polymers; Nanocomposites; Luminescence; Multilayer structure; Dielectrics; CARBON NANOTUBE; POLYPYRROLE; COMPOSITES;
D O I：
10.1016/j.matlet.2015.05.154
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Present research is focussed on the development of a novel composite material for highly-efficient absorption of electromagnetic interference (EMI) pollution. Herein, we report synthesis and characterization of polypyrrole (PPY) composite containing multi-layered graphene (MLG) anchored with titanium dioxide (TiO2) via in-situ oxidative polymerization of pyrrole. The tuning of the microwave signals has achieved via composites with different weight ratios of MLG and TiO2. The maximum Total shielding effectiveness (SET), 53 dB was observed for PPY/MLG/TiO2 (5% composite) in the frequency range of 12.4-18 GHz. The observed results suggest that the composite material could be a new alternative for building block of electromagnetic shielding applications. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：167 / 169
页数：3
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