Comparative study of microwave absorption characteristics of (Polyaniline/NiZn ferrite) nanocomposites with different ferrite percentages
| Autor: | Akil Salloum, Abdulkarim Charba, Nassim Nasser Ali, Yomen Atassi, Adnan Malki, Mojtaba Jafarian |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Nanocomposite Composite number Reflection loss 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences chemistry.chemical_compound Aniline chemistry Polymerization Chemical engineering 0103 physical sciences Polyaniline Ferrite (magnet) General Materials Science 0210 nano-technology Microwave |
| Zdroj: | Materials Chemistry and Physics. 211:79-87 |
| ISSN: | 0254-0584 |
| DOI: | 10.1016/j.matchemphys.2018.02.017 |
| Popis: | We present the preparation of polyaniline/Ni0.5 Zn0.5Fe2O4 (PANI/NiZn ferrite) nanocomposite. The preparation process consists of two steps: First, the ferrite is synthesized by self-combustion technique using sucrose as fuel. Then, the process is continued by in-situ chemical oxidative polymerization of aniline in the presence of the ferrite. Three different weight ratios of PANI/NiZn ferrite (1:2, 1:1, and 2:1) are prepared and structurally characterized by SEM, XRD, FT-IR and UV-vis spectroscopy. The functional characterization is performed by measuring the dc-conductivity, and microwave absorption characteristics in the range (8–12 GHz). XRD patterns prove the formation of the spinel ferrite, while SEM analysis indicates that the change in PANI/NiZn ferrite ratio has an effect on the morphology, which eventually influences the microwave absorption characteristics of the composite. A maximum reflection loss of −39.56 dB at 11.0 GHz with a matching thickness of 2.5 mm and a bandwidth of 3.0 GHz is obtained for PANI/NiZn ferrite having a weight ratio of 1:1 with only 25%w/w load in paraffin. |
| Databáze: | OpenAIRE |
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