Improvement of the microwave absorption properties in FeNi/PANI nanocomposites fabricated with different structures

Almasi-Kashi, Mohammad; Mokarian, Mohammad Hossein; Alikhanzadeh-Arani, Sima

doi:10.1016/j.jallcom.2018.01.294

Cited by 68 publications

(17 citation statements)

References 36 publications

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“…Polyaniline (PANI) is a semi-flexible conducting polymer of the organic semiconductor family [4], which has attracted intensive interest as a result of remarkable features including superior conductivity [5], environmental stability [6], intriguing redox process [7] and inexpensive starting material [8]. In multidisciplinary areas, various applications for PANI have been reported such as biosensors, supercapacitors, biofuel cells, actuators, corrosion protection, membranes, solar cell devices, and rechargeable batteries [4,[9][10][11][12]. Tunable properties, good processability (facile synthesis process), affordability, suitable electrochemical and environmental stability, strong bimolecular interactions and intriguing acid/base and doping/dedoping properties have made PANI a promising polymer among inherently conducting polymers [10].…”

Section: Introductionmentioning

confidence: 99%

A highly sensitive biosensor based on methacrylated graphene oxide-grafted polyaniline for ascorbic acid determination

Naghib

Behzad

Rahmanian

et al. 2020

Nanotechnology Reviews

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Functionalized graphene-based nanocomposites have opened new windows to address some challenges for increasing the sensitivity, accuracy and functionality of biosensors. Polyaniline (PANI) is one of the most potentially promising and technologically important conducting polymers, which brings together the electrical features of metals with intriguing properties of plastics including facile processing and controllable chemical and physical properties. PANI/graphene nanocomposites have attracted intense interest in various fields due to unique physicochemical properties including high conductivity, facile preparation and intriguing redox behavior. In this article, a functionalized graphene-grafted nanostructured PANI nanocomposite was applied for determining the ascorbic acid (AA) level. A significant current response was observed after treating the electrode surface with methacrylated graphene oxide (MeGO)/PANI nanocomposite. The amperometric responses showed a robust linear range of 8–5,000 µM and detection limit of 2 µM (N = 5). Excellent sensor selectivity was demonstrated in the presence of electroactive components interfering species, commonly found in real serum samples. This sensor is a promising candidate for rapid and selective determination of AA.

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Section: Introductionmentioning

confidence: 99%

A highly sensitive biosensor based on methacrylated graphene oxide-grafted polyaniline for ascorbic acid determination

Naghib

Behzad

Rahmanian

et al. 2020

Nanotechnology Reviews

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“…enhanced EMW-absorbing performance of a lower RL-min of -18.37 dB and a larger EAB-max of 1.8 GHz (Figure 2b or Figure 2e). As for C-30 in Figure 2c or Figure 2f, a larger EAB-max of 2.6 GHz was obtained at a corresponding thickness of 7.0 mm, which covered a part of the Ku-band (12)(13)(14)(15)(16)(17)(18). It can be clearly seen in Figure 2g or Figure 2j that sample C-40 presented an EAB-max of 3.3 GHz at a corresponding thickness of 7.0 mm.…”

Section: Electromagnetic Wave Absorbing Performance Analysesmentioning

confidence: 66%

“…To solve these problems, there is an urgent demand for the development of electromagnetic wave absorbing materials (EMWMs) with high EMW absorbing performance [7][8][9][10][11]. Over the past decade, a number of EMWMs have been developed and reported for these purposes, such as metal magnetic particles, metal oxides, carbon materials, and ceramic materials [12][13][14][15][16]. Recently, polymeric EWAMs, which were fabricated by adding one or more types of absorbing agents to the polymer matrix, have been widely investigated due to their outstanding mechanical properties and processability [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effects of Carbonyl Iron Powder (CIP) Content on the Electromagnetic Wave Absorption and Mechanical Properties of CIP/ABS Composites

Lai

Wang

2020

Polymers

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Three-dimensional (3D) printing technology has proven to be a convenient and effective method to fabricate structural electromagnetic wave (EMW) absorbers with tunable EMW absorption properties. To obtain a functional material with strong EMW absorbing performance and excellent mechanical properties for fused deposition modeling (FDM) 3D printing technology, in this work, carbonyl iron powder (CIP)/acrylonitrile-butadiene-styrene copolymer (ABS) composites with different CIP contents were prepared by the melt-mixing process. The effects of the CIP content on the EMW absorption and mechanical properties of CIP/ABS composites were investigated. The CIP/ABS composite with a CIP content of 40 wt.% presented the lowest reflection loss (RL) of −48.71 dB for the optimal impedance matching. In addition, this composite exhibited optimal mechanical properties due to the good dispersion of the CIPs in the matrix ABS. Not only were the tensile and flexural strength similar to pure ABS, but the tensile and flexural modulus were 32% and 37% higher than those of pure ABS, respectively. With a CIP content of 40 wt.%, the CIP/ABS composite proved to be a novel functional material with excellent EMW absorbing and mechanical properties, providing great potential for the development of structural absorbers via FDM 3D printing technology.

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“…The dissipation factors (tan δ) and attenuation constants (α) of CuCr 2 O 4 /silicone rubber, modified CuCr 2 O 4 /silicone rubber, CuCr 2 O 4 /PVDF, and modified CuCr 2 O 4 /PVDF nanocomposites in the x and ku‐band frequency have been shown in Figure . The dissipation factor was calculated by

tan δ = \frac{{δ_{r}}^{″}}{{δ_{r}}^{'}}

where

{δ_{r}}^{'} = {ϵ_{normalr}}^{'} {μ_{normalr}}^{'} - {ϵ_{normalr}}^{″} {μ_{normalr}}^{″}

and

{δ_{r}}^{″} = {ϵ_{normalr}}^{'} {μ_{normalr}}^{″} + {ϵ_{normalr}}^{″} {μ_{normalr}}^{'}

as well as the attenuation constant (α) was defined by equations . As indicated, the modified CuCr 2 O 4 /PVDF spectrum demonstrated an enhanced dissipation factor and attenuation constant.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

Peymanfar

Khodamoradipoor²

2019

Physica Status Solidi (a)

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In this study, simple, broadband, robust, and affordable microwave absorbing nanocomposites are prepared using CuCr2O4 nanoparticles as guests and silicone rubber or poly(vinylidene fluoride) (PVDF) as host. Firstly, the pristine and modified CuCr2O4 nanoparticles are obtained by the conventional citrate gel method in the absence and presence of sucrose as a novel capping agent in the experimental steps. X‐ray powder diffraction (XRD) patterns confirms that the CuCr2O4 nanoparticles are synthesized. Moreover, morphologies, chemical functional groups, and optical properties are studied using field emission scanning electron microscopy (FE‐SEM), Fourier transform infrared (FT‐IR), and diffuse reflection spectroscopy (DRS), respectively. The vibrating sample magnetometer (VSM) analysis reveals weak magnetic properties for the nanoparticles and confirms that the capping agent change the magnetic properties. Finally, bare and modified copper chromium oxide nanoparticles are separately molded with silicone rubber or PVDF to compare dipole and interfacial polarization. Besides, using a vector network analyzer (VNA) along the x and ku‐band frequency, novel organic precursor effects on their microwave absorption properties are examined. According to the obtained results, the maximum reflection loss of the modified CuCr2O4/PVDF is −65.57 dB at 14 GHz with 2 mm thickness and the CuCr2O4/PVDF nanocomposite absorbs a bandwidth of 7.73 GHz more than 10 dB with a thickness of 2 mm. Interestingly, novel one type filler lead to significant microwave absorbing properties as well as organic capping agent reinforced maximum microwave absorption also PVDF improves absorption bandwidth.

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Improvement of the microwave absorption properties in FeNi/PANI nanocomposites fabricated with different structures

Cited by 68 publications

References 36 publications

A highly sensitive biosensor based on methacrylated graphene oxide-grafted polyaniline for ascorbic acid determination

A highly sensitive biosensor based on methacrylated graphene oxide-grafted polyaniline for ascorbic acid determination

Effects of Carbonyl Iron Powder (CIP) Content on the Electromagnetic Wave Absorption and Mechanical Properties of CIP/ABS Composites

Preparation and Characterization of Copper Chromium Oxide Nanoparticles Using Modified Sol‐Gel Route and Evaluation of Their Microwave Absorption Properties

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