| Summary: | 碩士 === 國立高雄應用科技大學 === 化學工程與材料工程系 === 98 === In present work, organic/inorganic hybrid nanocomposite has been developed and characterization for future applications in electronic devices. But few work to investigation organic/organic nanocomposite film. In order to investigation polymer/polymer nanocomposite electronic and physical characteristic, a nanocomposite was fabricated using poly(vinylidene chloride-co-methyl acrylate) (PVDC-co-MA) as matrix and organic semiconducting polymer as filler. Dope with different concentration p-type poly(3,4-ethylenedioxythiophene) (PEDOT) nanoparticle and as filler. The nanocomposite was prepared by solution precipitation method. Thermal and dielectric properties of these composites were studied by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), optical thermal analyzer hot disc and an impedance analyzer, respectively. Dielectric data were analyzed using complex permittivity ε* and complex impedance for the sample at various temperatures and frequency. Alternating current (ac) impedance measurements have been used to investigate the capacitance , the interactive characteristics of the polymer main chain and side chain rotation. The complex ac impedance, Z, will be expressed as Z=Z’-jZ”, where Z’ is the real part and Z” is the imaginary part, j= . The frequency responses of MIM structures were investigated as a function of temperature. Dielectric constant and conductivity are measured in the frequency range from 40 Hz to 100 kHz and in the temperature range from room temperature (RT) to 373 K. The Impedance Analyzer to show the electrical properties and molecular chain motion dependence on varies temperature and frequency. Frequency dependence of ac dielectric constant follows Cole-Cole dielectric relaxation equation.
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