Synthesis of the functional polyoxomethalates and its application in polyurethane composites

The aim of the this thesis, is to prepared Keggin type polyoxometalates (POM), were used to synthesis of polymeric composite with hydrothermal synthesis was used to prepare POM, which investigate of dielectric properties. In this thesis, Keggin type polyoxometalates having three different composition were synthesized with amoniumheptamolybdate and different metal ion salts by hydrothermal method. The polyurethane-POM nanocomposites were prepared by in-situ polymerization and blending. The prepared polyurethane-POM nanocomposites were characterized for their structure, morphology, and thermal behavior. The microstructures and morphology of the as-obtained samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) equipped with an energy-dispersive X-ray spectrometer (EDS). Thermal properties of the obtained polymers and polymeric composites were determined with TGA, DTA and DSC analysis. Size and composition analysis were determined also used by SEM and EDX techniques.