NDLI: Microwave Absorbing Properties of DBSA-doped Polyaniline/BaTiO3-Ni0.5Zn0.5Fe2O4 Nanocomposites

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Microwave Absorbing Properties of DBSA-doped Polyaniline/BaTiO3-Ni0.5Zn0.5Fe2O4 Nanocomposites

Content Provider	Scilit
Author	Das, Chapal Kumar Mandal, Avinandan
Copyright Year	2011
Description	Development of RADAR absorbing materials (RAMs) is the most important research area in camouflage application mainly in Defence. Aniline was polymerized in presence of dodecylbenzene sulphonic acid (DBSA) as a functionalized protonic acid in water medium to form DBSA-doped polyaniline (PANI). Ni 0.5 Zn 0.5 Fe 2 O 4 (NZF) nanoparticles were synthesized by co-precipitation method along with Bariun Titanate (BaTiO 3 ) particles to form BaTiO 3 -Ni 0.5 Zn 0.5 Fe 2 O 4 nanoparticles. Both DBSA-doped PANI and BaTiO 3 -Ni 0.5 Zn 0.5 Fe 2 O 4 nanoparticles were thoroughly mixed in different ratios and the mixtures were dispersed in Epoxy Resin (LY556) matrices to produce RAMs. The spectroscopic characterization of the composite materials were examined by using X-ray diffraction (XRD), scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX), High resolution transmission electron microscopy (HR-TEM). The microwave absorbing properties return loss (dB) and important parameters such as complex relative permittivity (? r ´ - j? r ´´), complex relative permeability (µ r ´ - jµ r ´´) were measured in different microwave frequencies in X-band (8.2-12.4 GHz) region. The composite materials showed that a wider absorption frequency range and showed maximum return loss of -15.78 dB (>97% power absorption) at 10.8 GHz. The mechanism of microwave absorption occurs mainly due to the dielectric loss rather than magnetic loss.
ISSN	19270585
e-ISSN	19270593
DOI	10.5539/jmsr.v1n1p45
Journal	Journal of Materials Science Research
Issue Number	1
Volume Number	1
Language	English
Publisher	Canadian Center of Science and Education
Publisher Date	2011-12-29
Access Restriction	Open
Subject Keyword	Inorganic Chemistry Microwave Absorbing Properties
Content Type	Text
Resource Type	Article

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