الفهرس 
Chapter 1 Introduction and Literature ReviewOnly 14 pages are availabe for public view
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Abstract
Magnetic nanoparticles embedded in polymer matrices have excellent potential for microwave applications. Nickel zinc nano ferrite was synthesized using simple green auto combustion method. These nanoparticles are characterized through XRD, FTIR, SEM, TEM, VSM and broadband spectroscopy. The Ni0.5Zn0.5Fe2O4 sample is a promising material to be used in polymer nanocomposites for microwave applications.
The polymer nanocomposites of polyvinyl alcohol (PVA) and polyester are processed using solution casting method. Several samples with various wt% of nanoparticles in polymer matrix have been processed. Structural characteristics, thermal and electrical properties of the nanocomposites are characterized by different techniques and compared to those of the unfilled polymer.
The presence of nanoparticles in the polymer resulted in increased thermal stability, increased the dielectric constant and increased the dielectric tangent loss. Significant differences in the properties of different nanocomposites when compared to those of the unfilled polymer were attributed to the variations in microstructure and properties which greatly depend on surface area, inherent properties, orientation and extent of interactions of the nanofiller with the polymer.
The microwave properties of the prepared polymer nanocomposites obtained from impedance analyzer measurements were used to model flat plate and conical PEC in RCS reduction application. The RCS of the flat plate covered with a single layer or double layer of the prepared absorbing materials was always less than the corresponding one for the PEC plate. Also, the RCS.