Graphene oxide reinforced polyvinyl alcohol/polyethylene glycol blend composites as high-performance dielectric material

被引:108
作者
Deshmukh, Kalim [1 ]
Ahamed, M. Basheer [1 ]
Sadasivuni, Kishor Kumar [2 ]
Ponnamma, Deepalekshmi [3 ]
Deshmukh, Rajendra R. [4 ]
Pasha, S. K. Khadheer [5 ]
AlMaadeed, Mariam Al-Ali [3 ]
Chidambaram, K. [5 ]
机构
[1] BS Abdur Rahman Univ, Dept Phys, Madras 600048, Tamil Nadu, India
[2] Qatar Univ, Mech & Ind Engn Dept, POB 2713, Doha, Qatar
[3] Qatar Univ, Ctr Adv Mat, POB 2713, Doha, Qatar
[4] Inst Chem Technol, Dept Phys, Bombay 400019, Maharashtra, India
[5] VIT Univ, Sch Adv Sci, Dept Phys, Vellore 632014, Tamil Nadu, India
关键词
High-k materials; Graphene oxide; Capacitor; Polymer blend; Biocomposite; POLYMER NANOCOMPOSITES; ENERGY-STORAGE; POLY(VINYL ALCOHOL); TIO2; NANOPARTICLES; FILMS; TRANSPARENT; FABRICATION; DISCHARGE; BARRIER;
D O I
10.1007/s10965-016-1056-8
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Novel flexible dielectric composites composed of polyvinyl alcohol (PVA), polyethylene glycol (PEG), and graphene oxide (GO) with high dielectric constant and low dielectric loss have been developed using facile and eco-friendly colloidal processing technique. The structure and morphology of the PVA/PEG/GO composites were evaluated using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, UV-vis spectroscopy (UV-vis), X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force microscopy (AFM). The dielectric behavior of PVA/PEG/GO composites was investigated in the wide range of frequencies from 50 Hz to 20 MHz and temperature in the range 40 to 150 A degrees C using impedance spectroscopy. The dielectric constant for PVA and PVA/PEG (50/50) blend film was found to be 10.71 (50 Hz, 150 A degrees C) and 31.22 (50 Hz, 150 A degrees C), respectively. The dielectric constant for PVA/PEG/GO composite with 3 wt% GO was found to be 644.39 (50 Hz, 150 A degrees C) which is 60 times greater than the dielectric constant of PVA and 20 times greater than the dielectric constant of PVA/PEG (50/50) blend film. The PVA/PEG/GO composites not only show high dielectric constant but also show low dielectric loss which is highly attractive for practical applications. These findings underline the possibilities of using PVA/PEG/GO composites as a flexible dielectric material for high-performance energy storage applications such as embedded capacitors.
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页数:13
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