Belkacem Belaabed
École Normale Supérieure
Composite numberMiscibilityDipole antennaThermal analysisDielectricConductive polymerDegradation (geology)Patch antennaComposite materialFourier transform infrared spectroscopyEpoxyPermittivityMicrostrip antennaPolymer chemistryMaterials scienceElectromagnetic shieldingReflection lossPolyanilineDifferential scanning calorimetryMicrowaveOptoelectronicsPolymerPlasticizerThermal stabilityThermogravimetric analysisCoaxial antennaMonopole antenna
Publications 18
#1Belkacem Belaabed ('ENS Paris': École Normale Supérieure)H-Index: 10
#2Saad LamouriH-Index: 13
Last. Jean-Luc Wojkiewicz (École des Mines de Douai)H-Index: 16
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Magnetized (PANI-coated Fe3O4) epoxy resin was synthesized to produce X-band microwave absorbing structures (MASs) with tuning thickness and fillers ratio. The structure and crystallinity of materials were checked by SEM and X-ray diffraction. It was found that the thickness, amount, and ratio of magnetized PANI-coated Fe3O4 affect the microwave absorption properties. Single layer MAS with 3 mm showed a reflection loss (RL) of −54 dB at 8.73 GHz and −41 dB at 9.52 GHz. However, a double-layer...
10 CitationsSource
#1Z. HamoudaH-Index: 4
#2Jean-Luc Wojkiewicz (Sage Group)H-Index: 16
Last. Tuami Lasri (university of lille)H-Index: 19
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In this communication, a fully organic dual-band antenna is presented. It consists of a coplanar waveguide coupled to an elliptical monopole antenna designed on a kapton substrate. This antenna is fabricated from a process, based on the use of a conductive polymer (Polyaniline) doped with multiwall carbon nanotubes, that has been optimized for this application. The flexibility of both kapton substrate and doped conductive polymer gives the antenna the ability to be freely crumpled paving the way...
22 CitationsSource
#1Mostefa SayhiH-Index: 1
#2Nasreddine HaineH-Index: 1
Last. Valerie Vigneras (CNRS: Centre national de la recherche scientifique)H-Index: 3
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Conducting polymer blends were prepared using polyaniline doped with para- toluene sulfonic acid (PTSA-PANI) and a polyester polyol-based polyurethane (PU). The morphological, thermal and dielectric properties of the PTSA-PANI/PU blends in the frequency range of 1–5 GHz (S band) were investigated. It was found that the morphology of the samples was affected by the PTSA-PANI loading, resulting in the formation of agglomerates and pathways when above 10 wt%. The thermal stability of the composites...
3 CitationsSource
May 13, 2015 in EuCAP (European Conference on Antennas and Propagation)
#1Z. HamoudaH-Index: 4
#2J-L. Wojkiewicz (Sage Group)H-Index: 3
Last. Tuami LasriH-Index: 19
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This paper describes the design, fabrication and characterization of a flexible CPW-fed monopole organic antenna, based on a multiwall carbon nanotubes (MWCNT) doped Polyaniline (PANI). The antenna is printed on a 130µm Kapton® substrate. The design proposed allows the coverage of two frequency bands, 1.8 to 2.8 GHz and 4.5 to 7 GHz, which include ISM frequencies (2.45 GHz and 5.8 GHz). The dual-band monopole antenna is made of a 65µm-thick conducting polymer (PANI/MWCNT) whose measured conducti...
4 Citations
#1Sofiane Zeghina ('ENS Paris': École Normale Supérieure)H-Index: 1
#2Jean-Luc Wojkiewicz (Sage Group)H-Index: 16
Last. Nathalie Redon (Sage Group)H-Index: 11
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Polymer blends based on nanostructured polyaniline (PANI) doped with hydrochloric acid (HCl) and para-toluene sulfonic acid (PTSA) introduced into aliphatic polyurethane matrix (PU) are synthesized to produce flexible thin composite films for microwave absorbers. The effects of dopant type, PANI content and film thickness on morphologies, dielectric and microwave absorption properties in the X-band are studied. It reveals that real and imaginary parts of the complex permittivity are proportional...
13 CitationsSource
Apr 6, 2014 in EuCAP (European Conference on Antennas and Propagation)
#1Z. Hamouda (University of Blida)H-Index: 1
#2J-L. Wojkiewicz (École des Mines de Douai)H-Index: 1
Last. Tuami Lasri (university of lille)H-Index: 19
view all 6 authors...
4 CitationsSource
#1Nacera NaarH-Index: 5
view all 5 authors...
#1Belkacem BelaabedH-Index: 10
Last. Nacera NaarH-Index: 5
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#1Noureddine El Kamchi (École des Mines de Douai)H-Index: 3
#2Belkacem BelaabedH-Index: 10
Last. Tuami LasriH-Index: 19
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In this work, two types of hybrid composite materials were elaborated. The first based on polyaniline (PANI) doped Camphor Sulfonic acid (CSA), Carbon-Coated Cobalt (CCo), and FeNi nanoparticles dispersed in polyurethane. A value of 104 S/m of conductivity and a 90 dB of shielding effectiveness in multilayer structure were obtained over the 8–18 GHz frequency band. The second type, based on PANI doped para-toluene sulfonic acid (PTSA), dispersed in epoxy resin with FeNi nanoparticles. A thick ma...
36 CitationsSource
#1Belkacem BelaabedH-Index: 10
#2Jean-Luc Wojkiewicz (university of lille)H-Index: 16
Last. Nathalie Redon (university of lille)H-Index: 11
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Composites based on conductive organic/inorganic fillers dispersed in insulating matrix have been widely investigated because of their widespread applications such as electromagnetic shielding, electrostatic discharge, and sensors. In this context, novel composite materials based on epoxy resin matrix charged with polyaniline (PANI)-doped para-toluene sulfonic acid were elaborated. Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy were used to check the ...
27 CitationsSource