Polyaniline/Fe3O4-RGO Nanocomposites for Microwave Absorption

International Conference on Advances in Materials and Manufacturing Applications 2017

Mathew, Jithin^1 ; Sathishkumar, M.^2,3 ; Kothurkar, Nikhil K.^2,3 ; Senthilkumar, R.^2,3 ; Sabarish Narayanan, B.^4

Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Tamil Nadu, Coimbatore

641112, India^1

Department of Chemical Engineering and Material Sciences, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Tamil Nadu, Coimbatore

641112, India^2

Centre of Excellence in Advanced Materials and Green Technologies, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Tamil Nadu, Coimbatore

641112, India^3

Department of Electronics and Communication Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Tamil Nadu, Coimbatore

641112, India^4

关键词: Electrical conductivity;    EMI shielding effectiveness;    Fe3O4 nanoparticles;    Hydrazine hydrate;    In-situ polymerization;    Microwave absorption;    Reduced graphene oxides (RGO);    Sodium dodecyl benzene sulphonate;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/310/1/012138/pdf
DOI  :  10.1088/1757-899X/310/1/012138

来源: IOP

【 摘 要 】

Fe3O4nanoparticles were synthesized by co-precipitation of ferric chloride (FeCl3) and ferrous chloride (FeCl2). Reduced graphene oxide (RGO) was prepared by reducing the graphene oxide, which was synthesized by Hummer's method, using hydrazine hydrate. Three nanocomposites based on sodium dodecyl benzene sulphonate (SDBS)-doped polyaniline were synthesized through in situ polymerization in the presence of the fillers (i) Fe3O4, (ii) reduced graphene oxide (RGO) and (iii) Fe3O4-decorated RGO respectively. The synthesized PANI and the composites were characterized by X-ray diffraction, Fourier transform infrared spectroscopy and transmission electron microscopy. Their microstructures, electrical conductivities, and EMI shielding effectiveness were studied. The nanocomposite containing 10 % RGO showed the maximum electrical conductivity and the one with 10 % RGO and 10 % Fe3O4showed the maximum EMI shielding effectiveness of 7.5 dB for a 1 mm thick sample.